diff --git a/PPOCRLabel/PPOCRLabel.py b/PPOCRLabel/PPOCRLabel.py
index 517714104d1cb62f3b0c03c34843595d85502417..34c045e96aa10ba678447eefc1d007f9042804b8 100644
--- a/PPOCRLabel/PPOCRLabel.py
+++ b/PPOCRLabel/PPOCRLabel.py
@@ -10,7 +10,6 @@
 # SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 # CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
-
 # !/usr/bin/env python
 # -*- coding: utf-8 -*-
 # pyrcc5 -o libs/resources.py resources.qrc
@@ -24,13 +23,11 @@ import subprocess
 import sys
 from functools import partial
 
-try:
-    from PyQt5 import QtCore, QtGui, QtWidgets
-    from PyQt5.QtGui import *
-    from PyQt5.QtCore import *
-    from PyQt5.QtWidgets import *
-except ImportError:
-    print("Please install pyqt5...")
+from PyQt5.QtCore import QSize, Qt, QPoint, QByteArray, QTimer, QFileInfo, QPointF, QProcess
+from PyQt5.QtGui import QImage, QCursor, QPixmap, QImageReader
+from PyQt5.QtWidgets import QMainWindow, QListWidget, QVBoxLayout, QToolButton, QHBoxLayout, QDockWidget, QWidget, \
+    QSlider, QGraphicsOpacityEffect, QMessageBox, QListView, QScrollArea, QWidgetAction, QApplication, QLabel, \
+    QFileDialog, QListWidgetItem, QComboBox, QDialog
 
 __dir__ = os.path.dirname(os.path.abspath(__file__))
 
@@ -42,6 +39,7 @@ sys.path.append("..")
 from paddleocr import PaddleOCR
 from libs.constants import *
 from libs.utils import *
+from libs.labelColor import label_colormap
 from libs.settings import Settings
 from libs.shape import Shape, DEFAULT_LINE_COLOR, DEFAULT_FILL_COLOR, DEFAULT_LOCK_COLOR
 from libs.stringBundle import StringBundle
@@ -53,9 +51,13 @@ from libs.colorDialog import ColorDialog
 from libs.ustr import ustr
 from libs.hashableQListWidgetItem import HashableQListWidgetItem
 from libs.editinlist import EditInList
+from libs.unique_label_qlist_widget import UniqueLabelQListWidget
+from libs.keyDialog import KeyDialog
 
 __appname__ = 'PPOCRLabel'
 
+LABEL_COLORMAP = label_colormap()
+
 
 class MainWindow(QMainWindow):
     FIT_WINDOW, FIT_WIDTH, MANUAL_ZOOM = list(range(3))
@@ -63,6 +65,7 @@ class MainWindow(QMainWindow):
     def __init__(self,
                  lang="ch",
                  gpu=False,
+                 kie_mode=False,
                  default_filename=None,
                  default_predefined_class_file=None,
                  default_save_dir=None):
@@ -76,12 +79,19 @@ class MainWindow(QMainWindow):
         self.settings.load()
         settings = self.settings
         self.lang = lang
+
         # Load string bundle for i18n
         if lang not in ['ch', 'en']:
             lang = 'en'
         self.stringBundle = StringBundle.getBundle(localeStr='zh-CN' if lang == 'ch' else 'en')  # 'en'
         getStr = lambda strId: self.stringBundle.getString(strId)
 
+        # KIE setting
+        self.kie_mode = kie_mode
+        self.key_previous_text = ""
+        self.existed_key_cls_set = set()
+        self.key_dialog_tip = getStr('keyDialogTip')
+
         self.defaultSaveDir = default_save_dir
         self.ocr = PaddleOCR(use_pdserving=False,
                              use_angle_cls=True,
@@ -133,11 +143,13 @@ class MainWindow(QMainWindow):
         self.autoSaveNum = 5
 
         #  ================== File List  ==================
+
+        filelistLayout = QVBoxLayout()
+        filelistLayout.setContentsMargins(0, 0, 0, 0)
+
         self.fileListWidget = QListWidget()
         self.fileListWidget.itemClicked.connect(self.fileitemDoubleClicked)
         self.fileListWidget.setIconSize(QSize(25, 25))
-        filelistLayout = QVBoxLayout()
-        filelistLayout.setContentsMargins(0, 0, 0, 0)
         filelistLayout.addWidget(self.fileListWidget)
 
         self.AutoRecognition = QToolButton()
@@ -158,10 +170,24 @@ class MainWindow(QMainWindow):
         self.fileDock.setWidget(fileListContainer)
         self.addDockWidget(Qt.LeftDockWidgetArea, self.fileDock)
 
+        #  ================== Key List  ==================
+        if self.kie_mode:
+            # self.keyList = QListWidget()
+            self.keyList = UniqueLabelQListWidget()
+            # self.keyList.itemSelectionChanged.connect(self.keyListSelectionChanged)
+            # self.keyList.itemDoubleClicked.connect(self.editBox)
+            # self.keyList.itemChanged.connect(self.keyListItemChanged)
+            self.keyListDockName = getStr('keyListTitle')
+            self.keyListDock = QDockWidget(self.keyListDockName, self)
+            self.keyListDock.setWidget(self.keyList)
+            self.keyListDock.setFeatures(QDockWidget.NoDockWidgetFeatures)
+            filelistLayout.addWidget(self.keyListDock)
+
         #  ================== Right Area  ==================
         listLayout = QVBoxLayout()
         listLayout.setContentsMargins(0, 0, 0, 0)
 
+        # Buttons
         self.editButton = QToolButton()
         self.reRecogButton = QToolButton()
         self.reRecogButton.setIcon(newIcon('reRec', 30))
@@ -174,12 +200,12 @@ class MainWindow(QMainWindow):
         self.DelButton = QToolButton()
         self.DelButton.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
 
-        lefttoptoolbox = QHBoxLayout()
-        lefttoptoolbox.addWidget(self.newButton)
-        lefttoptoolbox.addWidget(self.reRecogButton)
-        lefttoptoolboxcontainer = QWidget()
-        lefttoptoolboxcontainer.setLayout(lefttoptoolbox)
-        listLayout.addWidget(lefttoptoolboxcontainer)
+        leftTopToolBox = QHBoxLayout()
+        leftTopToolBox.addWidget(self.newButton)
+        leftTopToolBox.addWidget(self.reRecogButton)
+        leftTopToolBoxContainer = QWidget()
+        leftTopToolBoxContainer.setLayout(leftTopToolBox)
+        listLayout.addWidget(leftTopToolBoxContainer)
 
         #  ================== Label List  ==================
         # Create and add a widget for showing current label items
@@ -341,7 +367,7 @@ class MainWindow(QMainWindow):
 
         resetAll = action(getStr('resetAll'), self.resetAll, None, 'resetall', getStr('resetAllDetail'))
 
-        color1 = action(getStr('boxLineColor'), self.chooseColor1,
+        color1 = action(getStr('boxLineColor'), self.chooseColor,
                         'Ctrl+L', 'color_line', getStr('boxLineColorDetail'))
 
         createMode = action(getStr('crtBox'), self.setCreateMode,
@@ -402,11 +428,12 @@ class MainWindow(QMainWindow):
             self.MANUAL_ZOOM: lambda: 1,
         }
 
+        #  ================== New Actions ==================
+
         edit = action(getStr('editLabel'), self.editLabel,
                       'Ctrl+E', 'edit', getStr('editLabelDetail'),
                       enabled=False)
 
-        #  ================== New Actions ==================
         AutoRec = action(getStr('autoRecognition'), self.autoRecognition,
                          '', 'Auto', getStr('autoRecognition'), enabled=False)
 
@@ -437,6 +464,9 @@ class MainWindow(QMainWindow):
         undo = action(getStr("undo"), self.undoShapeEdit,
                       'Ctrl+Z', "undo", getStr("undo"), enabled=False)
 
+        change_cls = action(getStr("keyChange"), self.change_box_key,
+                            'Ctrl+B', "edit", getStr("keyChange"), enabled=False)
+
         lock = action(getStr("lockBox"), self.lockSelectedShape,
                       None, "lock", getStr("lockBoxDetail"),
                       enabled=False)
@@ -482,8 +512,7 @@ class MainWindow(QMainWindow):
         addActions(labelMenu, (edit, delete))
 
         self.labelList.setContextMenuPolicy(Qt.CustomContextMenu)
-        self.labelList.customContextMenuRequested.connect(
-            self.popLabelListMenu)
+        self.labelList.customContextMenuRequested.connect(self.popLabelListMenu)
 
         # Draw squares/rectangles
         self.drawSquaresOption = QAction(getStr('drawSquares'), self)
@@ -499,14 +528,15 @@ class MainWindow(QMainWindow):
                               shapeLineColor=shapeLineColor, shapeFillColor=shapeFillColor,
                               zoom=zoom, zoomIn=zoomIn, zoomOut=zoomOut, zoomOrg=zoomOrg,
                               fitWindow=fitWindow, fitWidth=fitWidth,
-                              zoomActions=zoomActions, saveLabel=saveLabel,
+                              zoomActions=zoomActions, saveLabel=saveLabel, change_cls=change_cls,
                               undo=undo, undoLastPoint=undoLastPoint, open_dataset_dir=open_dataset_dir,
                               rotateLeft=rotateLeft, rotateRight=rotateRight, lock=lock,
                               fileMenuActions=(opendir, open_dataset_dir, saveLabel, resetAll, quit),
                               beginner=(), advanced=(),
                               editMenu=(createpoly, edit, copy, delete, singleRere, None, undo, undoLastPoint,
                                         None, rotateLeft, rotateRight, None, color1, self.drawSquaresOption, lock),
-                              beginnerContext=(create, edit, copy, delete, singleRere, rotateLeft, rotateRight, lock),
+                              beginnerContext=(
+                              create, edit, copy, delete, singleRere, rotateLeft, rotateRight, lock, change_cls),
                               advancedContext=(createMode, editMode, edit, copy,
                                                delete, shapeLineColor, shapeFillColor),
                               onLoadActive=(create, createMode, editMode),
@@ -615,6 +645,8 @@ class MainWindow(QMainWindow):
         elif self.filePath:
             self.queueEvent(partial(self.loadFile, self.filePath or ""))
 
+        self.keyDialog = None
+
         # Callbacks:
         self.zoomWidget.valueChanged.connect(self.paintCanvas)
 
@@ -949,6 +981,12 @@ class MainWindow(QMainWindow):
         self.labelList.scrollToItem(self.currentItem())  # QAbstractItemView.EnsureVisible
         self.BoxList.scrollToItem(self.currentBox())
 
+        if self.kie_mode:
+            if len(self.canvas.selectedShapes) == 1 and self.keyList.count() > 0:
+                selected_key_item_row = self.keyList.findItemsByLabel(self.canvas.selectedShapes[0].key_cls,
+                                                                      get_row=True)
+                self.keyList.setCurrentRow(selected_key_item_row)
+
         self._noSelectionSlot = False
         n_selected = len(selected_shapes)
         self.actions.singleRere.setEnabled(n_selected)
@@ -956,6 +994,7 @@ class MainWindow(QMainWindow):
         self.actions.copy.setEnabled(n_selected)
         self.actions.edit.setEnabled(n_selected == 1)
         self.actions.lock.setEnabled(n_selected)
+        self.actions.change_cls.setEnabled(n_selected)
 
     def addLabel(self, shape):
         shape.paintLabel = self.displayLabelOption.isChecked()
@@ -1002,8 +1041,8 @@ class MainWindow(QMainWindow):
 
     def loadLabels(self, shapes):
         s = []
-        for label, points, line_color, fill_color, difficult in shapes:
-            shape = Shape(label=label, line_color=line_color)
+        for label, points, line_color, key_cls, difficult in shapes:
+            shape = Shape(label=label, line_color=line_color, key_cls=key_cls)
             for x, y in points:
 
                 # Ensure the labels are within the bounds of the image. If not, fix them.
@@ -1017,16 +1056,7 @@ class MainWindow(QMainWindow):
             shape.close()
             s.append(shape)
 
-            # if line_color:
-            #     shape.line_color = QColor(*line_color)
-            # else:
-            #     shape.line_color = generateColorByText(label)
-            #
-            # if fill_color:
-            #     shape.fill_color = QColor(*fill_color)
-            # else:
-            #     shape.fill_color = generateColorByText(label)
-
+            self._update_shape_color(shape)
             self.addLabel(shape)
 
         self.updateComboBox()
@@ -1066,14 +1096,16 @@ class MainWindow(QMainWindow):
                         line_color=s.line_color.getRgb(),
                         fill_color=s.fill_color.getRgb(),
                         points=[(int(p.x()), int(p.y())) for p in s.points],  # QPonitF
-                        # add chris
-                        difficult=s.difficult)  # bool
+                        difficult=s.difficult,
+                        key_cls=s.key_cls)  # bool
 
-        shapes = [] if mode == 'Auto' else \
-            [format_shape(shape) for shape in self.canvas.shapes if shape.line_color != DEFAULT_LOCK_COLOR]
+        if mode == 'Auto':
+            shapes = []
+        else:
+            shapes = [format_shape(shape) for shape in self.canvas.shapes if shape.line_color != DEFAULT_LOCK_COLOR]
         # Can add differrent annotation formats here
         for box in self.result_dic:
-            trans_dic = {"label": box[1][0], "points": box[0], 'difficult': False}
+            trans_dic = {"label": box[1][0], "points": box[0], "difficult": False, "key_cls": "None"}
             if trans_dic["label"] == "" and mode == 'Auto':
                 continue
             shapes.append(trans_dic)
@@ -1081,8 +1113,8 @@ class MainWindow(QMainWindow):
         try:
             trans_dic = []
             for box in shapes:
-                trans_dic.append(
-                    {"transcription": box['label'], "points": box['points'], 'difficult': box['difficult']})
+                trans_dic.append({"transcription": box['label'], "points": box['points'],
+                                  "difficult": box['difficult'], "key_cls": box['key_cls']})
             self.PPlabel[annotationFilePath] = trans_dic
             if mode == 'Auto':
                 self.Cachelabel[annotationFilePath] = trans_dic
@@ -1148,8 +1180,7 @@ class MainWindow(QMainWindow):
         position MUST be in global coordinates.
         """
         if len(self.labelHist) > 0:
-            self.labelDialog = LabelDialog(
-                parent=self, listItem=self.labelHist)
+            self.labelDialog = LabelDialog(parent=self, listItem=self.labelHist)
 
         if value:
             text = self.labelDialog.popUp(text=self.prevLabelText)
@@ -1159,8 +1190,22 @@ class MainWindow(QMainWindow):
 
         if text is not None:
             self.prevLabelText = self.stringBundle.getString('tempLabel')
-            # generate_color = generateColorByText(text)
-            shape = self.canvas.setLastLabel(text, None, None)  # generate_color, generate_color
+
+            shape = self.canvas.setLastLabel(text, None, None, None)  # generate_color, generate_color
+            if self.kie_mode:
+                key_text, _ = self.keyDialog.popUp(self.key_previous_text)
+                if key_text is not None:
+                    shape = self.canvas.setLastLabel(text, None, None, key_text)  # generate_color, generate_color
+                    self.key_previous_text = key_text
+                    if not self.keyList.findItemsByLabel(key_text):
+                        item = self.keyList.createItemFromLabel(key_text)
+                        self.keyList.addItem(item)
+                        rgb = self._get_rgb_by_label(key_text, self.kie_mode)
+                        self.keyList.setItemLabel(item, key_text, rgb)
+
+                    self._update_shape_color(shape)
+                    self.keyDialog.addLabelHistory(key_text)
+
             self.addLabel(shape)
             if self.beginner():  # Switch to edit mode.
                 self.canvas.setEditing(True)
@@ -1175,6 +1220,25 @@ class MainWindow(QMainWindow):
             # self.canvas.undoLastLine()
             self.canvas.resetAllLines()
 
+    def _update_shape_color(self, shape):
+        r, g, b = self._get_rgb_by_label(shape.key_cls, self.kie_mode)
+        shape.line_color = QColor(r, g, b)
+        shape.vertex_fill_color = QColor(r, g, b)
+        shape.hvertex_fill_color = QColor(255, 255, 255)
+        shape.fill_color = QColor(r, g, b, 128)
+        shape.select_line_color = QColor(255, 255, 255)
+        shape.select_fill_color = QColor(r, g, b, 155)
+
+    def _get_rgb_by_label(self, label, kie_mode):
+        shift_auto_shape_color = 2  # use for random color
+        if kie_mode and label != "None":
+            item = self.keyList.findItemsByLabel(label)[0]
+            label_id = self.keyList.indexFromItem(item).row() + 1
+            label_id += shift_auto_shape_color
+            return LABEL_COLORMAP[label_id % len(LABEL_COLORMAP)]
+        else:
+            return (0, 255, 0)
+
     def scrollRequest(self, delta, orientation):
         units = - delta / (8 * 15)
         bar = self.scrollBars[orientation]
@@ -1344,7 +1408,7 @@ class MainWindow(QMainWindow):
             select_indexes = self.fileListWidget.selectedIndexes()
             if len(select_indexes) > 0:
                 self.fileDock.setWindowTitle(self.fileListName + f" ({select_indexes[0].row() + 1}"
-                                                                  f"/{self.fileListWidget.count()})")
+                                                                 f"/{self.fileListWidget.count()})")
             # update show counting
             self.BoxListDock.setWindowTitle(self.BoxListDockName + f" ({self.BoxList.count()})")
             self.labelListDock.setWindowTitle(self.labelListDockName + f" ({self.labelList.count()})")
@@ -1362,13 +1426,13 @@ class MainWindow(QMainWindow):
         for box in self.canvas.lockedShapes:
             if self.canvas.isInTheSameImage:
                 shapes.append((box['transcription'], [[s[0] * width, s[1] * height] for s in box['ratio']],
-                               DEFAULT_LOCK_COLOR, None, box['difficult']))
+                               DEFAULT_LOCK_COLOR, box['key_cls'], box['difficult']))
             else:
                 shapes.append(('锁定框：待检测', [[s[0] * width, s[1] * height] for s in box['ratio']],
-                               DEFAULT_LOCK_COLOR, None, box['difficult']))
+                               DEFAULT_LOCK_COLOR, box['key_cls'], box['difficult']))
         if imgidx in self.PPlabel.keys():
             for box in self.PPlabel[imgidx]:
-                shapes.append((box['transcription'], box['points'], None, None, box['difficult']))
+                shapes.append((box['transcription'], box['points'], None, box['key_cls'], box['difficult']))
 
         self.loadLabels(shapes)
         self.canvas.verified = False
@@ -1504,6 +1568,39 @@ class MainWindow(QMainWindow):
             self.actions.open_dataset_dir.setEnabled(False)
             defaultOpenDirPath = os.path.dirname(self.filePath) if self.filePath else '.'
 
+    def init_key_list(self, label_dict):
+        if not self.kie_mode:
+            return
+        # load key_cls
+        for image, info in label_dict.items():
+            for box in info:
+                if "key_cls" not in box:
+                    continue
+                self.existed_key_cls_set.add(box["key_cls"])
+        if len(self.existed_key_cls_set) > 0:
+            for key_text in self.existed_key_cls_set:
+                if not self.keyList.findItemsByLabel(key_text):
+                    item = self.keyList.createItemFromLabel(key_text)
+                    self.keyList.addItem(item)
+                    rgb = self._get_rgb_by_label(key_text, self.kie_mode)
+                    self.keyList.setItemLabel(item, key_text, rgb)
+
+        if self.keyDialog is None:
+            # key list dialog
+            self.keyDialog = KeyDialog(
+                text=self.key_dialog_tip,
+                parent=self,
+                labels=self.existed_key_cls_set,
+                sort_labels=True,
+                show_text_field=True,
+                completion="startswith",
+                fit_to_content={'column': True, 'row': False},
+                flags=None
+            )
+        else:
+            self.keyDialog.labelList.addItems(self.existed_key_cls_set)
+
+
     def importDirImages(self, dirpath, isDelete=False):
         if not self.mayContinue() or not dirpath:
             return
@@ -1518,6 +1615,9 @@ class MainWindow(QMainWindow):
             self.Cachelabel = self.loadLabelFile(self.Cachelabelpath)
             if self.Cachelabel:
                 self.PPlabel = dict(self.Cachelabel, **self.PPlabel)
+
+            self.init_key_list(self.PPlabel)
+
         self.lastOpenDir = dirpath
         self.dirname = dirpath
 
@@ -1737,7 +1837,7 @@ class MainWindow(QMainWindow):
     def currentPath(self):
         return os.path.dirname(self.filePath) if self.filePath else '.'
 
-    def chooseColor1(self):
+    def chooseColor(self):
         color = self.colorDialog.getColor(self.lineColor, u'Choose line color',
                                           default=DEFAULT_LINE_COLOR)
         if color:
@@ -1854,6 +1954,8 @@ class MainWindow(QMainWindow):
         self.setDirty()
         self.saveCacheLabel()
 
+        self.init_key_list(self.Cachelabel)
+
     def reRecognition(self):
         img = cv2.imread(self.filePath)
         # org_box = [dic['points'] for dic in self.PPlabel[self.getImglabelidx(self.filePath)]]
@@ -2059,7 +2161,8 @@ class MainWindow(QMainWindow):
                 try:
                     img = cv2.imread(key)
                     for i, label in enumerate(self.PPlabel[idx]):
-                        if label['difficult']: continue
+                        if label['difficult']:
+                            continue
                         img_crop = get_rotate_crop_image(img, np.array(label['points'], np.float32))
                         img_name = os.path.splitext(os.path.basename(idx))[0] + '_crop_' + str(i) + '.jpg'
                         cv2.imwrite(crop_img_dir + img_name, img_crop)
@@ -2096,6 +2199,15 @@ class MainWindow(QMainWindow):
             self.autoSaveNum = 5  # Used for backup
             print('The program will automatically save once after confirming 5 images (default)')
 
+    def change_box_key(self):
+        key_text, _ = self.keyDialog.popUp(self.key_previous_text)
+        if key_text is None:
+            return
+        self.key_previous_text = key_text
+        for shape in self.canvas.selectedShapes:
+            shape.key_cls = key_text
+            self._update_shape_color(shape)
+
     def undoShapeEdit(self):
         self.canvas.restoreShape()
         self.labelList.clear()
@@ -2126,8 +2238,9 @@ class MainWindow(QMainWindow):
                         line_color=s.line_color.getRgb(),
                         fill_color=s.fill_color.getRgb(),
                         ratio=[[int(p.x()) / width, int(p.y()) / height] for p in s.points],  # QPonitF
-                        # add chris
-                        difficult=s.difficult)  # bool
+                        difficult=s.difficult,  # bool
+                        key_cls=s.key_cls,  # bool
+                        )
 
         # lock
         if len(self.canvas.lockedShapes) == 0:
@@ -2137,7 +2250,9 @@ class MainWindow(QMainWindow):
             shapes = [format_shape(shape) for shape in self.canvas.selectedShapes]
             trans_dic = []
             for box in shapes:
-                trans_dic.append({"transcription": box['label'], "ratio": box['ratio'], 'difficult': box['difficult']})
+                trans_dic.append({"transcription": box['label'], "ratio": box['ratio'],
+                                  "difficult": box['difficult'],
+                                  "key_cls": "None" if "key_cls" not in box else box["key_cls"]})
             self.canvas.lockedShapes = trans_dic
             self.actions.save.setEnabled(True)
 
@@ -2179,6 +2294,7 @@ def get_main_app(argv=[]):
     arg_parser = argparse.ArgumentParser()
     arg_parser.add_argument("--lang", type=str, default='en', nargs="?")
     arg_parser.add_argument("--gpu", type=str2bool, default=True, nargs="?")
+    arg_parser.add_argument("--kie", type=str2bool, default=False, nargs="?")
     arg_parser.add_argument("--predefined_classes_file",
                             default=os.path.join(os.path.dirname(__file__), "data", "predefined_classes.txt"),
                             nargs="?")
@@ -2186,6 +2302,7 @@ def get_main_app(argv=[]):
 
     win = MainWindow(lang=args.lang,
                      gpu=args.gpu,
+                     kie_mode=args.kie,
                      default_predefined_class_file=args.predefined_classes_file)
     win.show()
     return app, win
diff --git a/PPOCRLabel/README.md b/PPOCRLabel/README.md
index e40d82916ed30f39641e88e73c6563cc4cd0183b..4d25e670ae6d07d569a247bc5f9c35c939b23f8e 100644
--- a/PPOCRLabel/README.md
+++ b/PPOCRLabel/README.md
@@ -8,6 +8,8 @@ PPOCRLabel is a semi-automatic graphic annotation tool suitable for OCR field, w
 
 ### Recent Update
 
+- 2022.02：（by [PeterH0323](https://github.com/peterh0323) ）
+  - Added KIE mode, for [detection + identification + keyword extraction] labeling.
 - 2022.01：（by [PeterH0323](https://github.com/peterh0323) ）
   - Improve user experience: prompt for the number of files and labels, optimize interaction, and fix bugs such as only use CPU when inference
 - 2021.11.17:
@@ -72,7 +74,8 @@ PPOCRLabel
 ```bash
 pip3 install PPOCRLabel
 pip3 install opencv-contrib-python-headless==4.2.0.32
-PPOCRLabel # run
+PPOCRLabel  # [Normal mode] for [detection + recognition] labeling
+PPOCRLabel --kie True # [KIE mode] for [detection + recognition + keyword extraction] labeling
 ```
 
 #### 1.2.2 Build and Install the Whl Package Locally
@@ -87,7 +90,8 @@ pip3 install dist/PPOCRLabel-1.0.2-py2.py3-none-any.whl
 
 ```bash
 cd ./PPOCRLabel  # Switch to the PPOCRLabel directory
-python PPOCRLabel.py
+python PPOCRLabel.py  # [Normal mode] for [detection + recognition] labeling
+python PPOCRLabel.py --kie True # [KIE mode] for [detection + recognition + keyword extraction] labeling
 ```
 
 
diff --git a/PPOCRLabel/README_ch.md b/PPOCRLabel/README_ch.md
index 815de99729e00fef6be0247571e27aebc82e53ab..3f8dc4f0c6b7cc88a71409d123f598e74b3f2cad 100644
--- a/PPOCRLabel/README_ch.md
+++ b/PPOCRLabel/README_ch.md
@@ -8,6 +8,8 @@ PPOCRLabel是一款适用于OCR领域的半自动化图形标注工具，内置P
 
 #### 近期更新
 
+- 2022.02：（by [PeterH0323](https://github.com/peterh0323) ）
+  - 新增：KIE 功能，用于打【检测+识别+关键字提取】的标签
 - 2022.01：（by [PeterH0323](https://github.com/peterh0323) ）
   - 提升用户体验：新增文件与标记数目提示、优化交互、修复gpu使用等问题
 - 2021.11.17：
@@ -70,7 +72,8 @@ PPOCRLabel --lang ch
 ```bash
 pip3 install PPOCRLabel
 pip3 install opencv-contrib-python-headless==4.2.0.32 # 如果下载过慢请添加"-i https://mirror.baidu.com/pypi/simple"
-PPOCRLabel --lang ch # 启动
+PPOCRLabel --lang ch  # 启动【普通模式】，用于打【检测+识别】场景的标签
+PPOCRLabel --lang ch --kie True  # 启动 【KIE 模式】，用于打【检测+识别+关键字提取】场景的标签
 ```
 
 > 如果上述安装出现问题，可以参考3.6节 错误提示
@@ -89,7 +92,8 @@ pip3 install dist/PPOCRLabel-1.0.2-py2.py3-none-any.whl -i https://mirror.baidu.
 
 ```bash
 cd ./PPOCRLabel  # 切换到PPOCRLabel目录
-python PPOCRLabel.py --lang ch
+python PPOCRLabel.py --lang ch  # 启动【普通模式】，用于打【检测+识别】场景的标签
+python PPOCRLabel.py --lang ch --kie True  # 启动 【KIE 模式】，用于打【检测+识别+关键字提取】场景的标签
 ```
 
 
diff --git a/PPOCRLabel/libs/canvas.py b/PPOCRLabel/libs/canvas.py
index 8d257e6bd7e7a61d7c28e9787042c3eb9d42609f..095fe5ab06553dcb05c8bcc061f950ded606ebb3 100644
--- a/PPOCRLabel/libs/canvas.py
+++ b/PPOCRLabel/libs/canvas.py
@@ -783,7 +783,7 @@ class Canvas(QWidget):
         points = [p1+p2 for p1, p2 in zip(self.selectedShape.points, [step]*4)]
         return True in map(self.outOfPixmap, points)
 
-    def setLastLabel(self, text, line_color  = None, fill_color = None):
+    def setLastLabel(self, text, line_color=None, fill_color=None, key_cls=None):
         assert text
         self.shapes[-1].label = text
         if line_color:
@@ -791,6 +791,10 @@ class Canvas(QWidget):
 
         if fill_color:
             self.shapes[-1].fill_color = fill_color
+
+        if key_cls:
+            self.shapes[-1].key_cls = key_cls
+
         self.storeShapes()
 
         return self.shapes[-1]
diff --git a/PPOCRLabel/libs/keyDialog.py b/PPOCRLabel/libs/keyDialog.py
new file mode 100644
index 0000000000000000000000000000000000000000..1ec8d97147cd2eb1e3c8482a9a6c5092edcd1b9c
--- /dev/null
+++ b/PPOCRLabel/libs/keyDialog.py
@@ -0,0 +1,216 @@
+import re
+
+from PyQt5 import QtCore
+from PyQt5 import QtGui
+from PyQt5 import QtWidgets
+from PyQt5.Qt import QT_VERSION_STR
+from libs.utils import newIcon, labelValidator
+
+QT5 = QT_VERSION_STR[0] == '5'
+
+
+# TODO(unknown):
+# - Calculate optimal position so as not to go out of screen area.
+
+
+class KeyQLineEdit(QtWidgets.QLineEdit):
+    def setListWidget(self, list_widget):
+        self.list_widget = list_widget
+
+    def keyPressEvent(self, e):
+        if e.key() in [QtCore.Qt.Key_Up, QtCore.Qt.Key_Down]:
+            self.list_widget.keyPressEvent(e)
+        else:
+            super(KeyQLineEdit, self).keyPressEvent(e)
+
+
+class KeyDialog(QtWidgets.QDialog):
+    def __init__(
+            self,
+            text="Enter object label",
+            parent=None,
+            labels=None,
+            sort_labels=True,
+            show_text_field=True,
+            completion="startswith",
+            fit_to_content=None,
+            flags=None,
+    ):
+        if fit_to_content is None:
+            fit_to_content = {"row": False, "column": True}
+        self._fit_to_content = fit_to_content
+
+        super(KeyDialog, self).__init__(parent)
+        self.edit = KeyQLineEdit()
+        self.edit.setPlaceholderText(text)
+        self.edit.setValidator(labelValidator())
+        self.edit.editingFinished.connect(self.postProcess)
+        if flags:
+            self.edit.textChanged.connect(self.updateFlags)
+
+        layout = QtWidgets.QVBoxLayout()
+        if show_text_field:
+            layout_edit = QtWidgets.QHBoxLayout()
+            layout_edit.addWidget(self.edit, 6)
+            layout.addLayout(layout_edit)
+        # buttons
+        self.buttonBox = bb = QtWidgets.QDialogButtonBox(
+            QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel,
+            QtCore.Qt.Horizontal,
+            self,
+        )
+        bb.button(bb.Ok).setIcon(newIcon("done"))
+        bb.button(bb.Cancel).setIcon(newIcon("undo"))
+        bb.accepted.connect(self.validate)
+        bb.rejected.connect(self.reject)
+        layout.addWidget(bb)
+        # label_list
+        self.labelList = QtWidgets.QListWidget()
+        if self._fit_to_content["row"]:
+            self.labelList.setHorizontalScrollBarPolicy(
+                QtCore.Qt.ScrollBarAlwaysOff
+            )
+        if self._fit_to_content["column"]:
+            self.labelList.setVerticalScrollBarPolicy(
+                QtCore.Qt.ScrollBarAlwaysOff
+            )
+        self._sort_labels = sort_labels
+        if labels:
+            self.labelList.addItems(labels)
+        if self._sort_labels:
+            self.labelList.sortItems()
+        else:
+            self.labelList.setDragDropMode(
+                QtWidgets.QAbstractItemView.InternalMove
+            )
+        self.labelList.currentItemChanged.connect(self.labelSelected)
+        self.labelList.itemDoubleClicked.connect(self.labelDoubleClicked)
+        self.edit.setListWidget(self.labelList)
+        layout.addWidget(self.labelList)
+        # label_flags
+        if flags is None:
+            flags = {}
+        self._flags = flags
+        self.flagsLayout = QtWidgets.QVBoxLayout()
+        self.resetFlags()
+        layout.addItem(self.flagsLayout)
+        self.edit.textChanged.connect(self.updateFlags)
+        self.setLayout(layout)
+        # completion
+        completer = QtWidgets.QCompleter()
+        if not QT5 and completion != "startswith":
+            completion = "startswith"
+        if completion == "startswith":
+            completer.setCompletionMode(QtWidgets.QCompleter.InlineCompletion)
+            # Default settings.
+            # completer.setFilterMode(QtCore.Qt.MatchStartsWith)
+        elif completion == "contains":
+            completer.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
+            completer.setFilterMode(QtCore.Qt.MatchContains)
+        else:
+            raise ValueError("Unsupported completion: {}".format(completion))
+        completer.setModel(self.labelList.model())
+        self.edit.setCompleter(completer)
+
+    def addLabelHistory(self, label):
+        if self.labelList.findItems(label, QtCore.Qt.MatchExactly):
+            return
+        self.labelList.addItem(label)
+        if self._sort_labels:
+            self.labelList.sortItems()
+
+    def labelSelected(self, item):
+        self.edit.setText(item.text())
+
+    def validate(self):
+        text = self.edit.text()
+        if hasattr(text, "strip"):
+            text = text.strip()
+        else:
+            text = text.trimmed()
+        if text:
+            self.accept()
+
+    def labelDoubleClicked(self, item):
+        self.validate()
+
+    def postProcess(self):
+        text = self.edit.text()
+        if hasattr(text, "strip"):
+            text = text.strip()
+        else:
+            text = text.trimmed()
+        self.edit.setText(text)
+
+    def updateFlags(self, label_new):
+        # keep state of shared flags
+        flags_old = self.getFlags()
+
+        flags_new = {}
+        for pattern, keys in self._flags.items():
+            if re.match(pattern, label_new):
+                for key in keys:
+                    flags_new[key] = flags_old.get(key, False)
+        self.setFlags(flags_new)
+
+    def deleteFlags(self):
+        for i in reversed(range(self.flagsLayout.count())):
+            item = self.flagsLayout.itemAt(i).widget()
+            self.flagsLayout.removeWidget(item)
+            item.setParent(None)
+
+    def resetFlags(self, label=""):
+        flags = {}
+        for pattern, keys in self._flags.items():
+            if re.match(pattern, label):
+                for key in keys:
+                    flags[key] = False
+        self.setFlags(flags)
+
+    def setFlags(self, flags):
+        self.deleteFlags()
+        for key in flags:
+            item = QtWidgets.QCheckBox(key, self)
+            item.setChecked(flags[key])
+            self.flagsLayout.addWidget(item)
+            item.show()
+
+    def getFlags(self):
+        flags = {}
+        for i in range(self.flagsLayout.count()):
+            item = self.flagsLayout.itemAt(i).widget()
+            flags[item.text()] = item.isChecked()
+        return flags
+
+    def popUp(self, text=None, move=True, flags=None):
+        if self._fit_to_content["row"]:
+            self.labelList.setMinimumHeight(
+                self.labelList.sizeHintForRow(0) * self.labelList.count() + 2
+            )
+        if self._fit_to_content["column"]:
+            self.labelList.setMinimumWidth(
+                self.labelList.sizeHintForColumn(0) + 2
+            )
+        # if text is None, the previous label in self.edit is kept
+        if text is None:
+            text = self.edit.text()
+        if flags:
+            self.setFlags(flags)
+        else:
+            self.resetFlags(text)
+        self.edit.setText(text)
+        self.edit.setSelection(0, len(text))
+
+        items = self.labelList.findItems(text, QtCore.Qt.MatchFixedString)
+        if items:
+            if len(items) != 1:
+                self.labelList.setCurrentItem(items[0])
+            row = self.labelList.row(items[0])
+            self.edit.completer().setCurrentRow(row)
+        self.edit.setFocus(QtCore.Qt.PopupFocusReason)
+        if move:
+            self.move(QtGui.QCursor.pos())
+        if self.exec_():
+            return self.edit.text(), self.getFlags()
+        else:
+            return None, None
diff --git a/PPOCRLabel/libs/labelColor.py b/PPOCRLabel/libs/labelColor.py
new file mode 100644
index 0000000000000000000000000000000000000000..c6f933981f3ca13981910a88fca76f884d727a14
--- /dev/null
+++ b/PPOCRLabel/libs/labelColor.py
@@ -0,0 +1,88 @@
+import PIL.Image
+import numpy as np
+
+
+def rgb2hsv(rgb):
+    # type: (np.ndarray) -> np.ndarray
+    """Convert rgb to hsv.
+
+    Parameters
+    ----------
+    rgb: numpy.ndarray, (H, W, 3), np.uint8
+        Input rgb image.
+
+    Returns
+    -------
+    hsv: numpy.ndarray, (H, W, 3), np.uint8
+        Output hsv image.
+
+    """
+    hsv = PIL.Image.fromarray(rgb, mode="RGB")
+    hsv = hsv.convert("HSV")
+    hsv = np.array(hsv)
+    return hsv
+
+
+def hsv2rgb(hsv):
+    # type: (np.ndarray) -> np.ndarray
+    """Convert hsv to rgb.
+
+    Parameters
+    ----------
+    hsv: numpy.ndarray, (H, W, 3), np.uint8
+        Input hsv image.
+
+    Returns
+    -------
+    rgb: numpy.ndarray, (H, W, 3), np.uint8
+        Output rgb image.
+
+    """
+    rgb = PIL.Image.fromarray(hsv, mode="HSV")
+    rgb = rgb.convert("RGB")
+    rgb = np.array(rgb)
+    return rgb
+
+
+def label_colormap(n_label=256, value=None):
+    """Label colormap.
+
+    Parameters
+    ----------
+    n_label: int
+        Number of labels (default: 256).
+    value: float or int
+        Value scale or value of label color in HSV space.
+
+    Returns
+    -------
+    cmap: numpy.ndarray, (N, 3), numpy.uint8
+        Label id to colormap.
+
+    """
+
+    def bitget(byteval, idx):
+        return (byteval & (1 << idx)) != 0
+
+    cmap = np.zeros((n_label, 3), dtype=np.uint8)
+    for i in range(0, n_label):
+        id = i
+        r, g, b = 0, 0, 0
+        for j in range(0, 8):
+            r = np.bitwise_or(r, (bitget(id, 0) << 7 - j))
+            g = np.bitwise_or(g, (bitget(id, 1) << 7 - j))
+            b = np.bitwise_or(b, (bitget(id, 2) << 7 - j))
+            id = id >> 3
+        cmap[i, 0] = r
+        cmap[i, 1] = g
+        cmap[i, 2] = b
+
+    if value is not None:
+        hsv = rgb2hsv(cmap.reshape(1, -1, 3))
+        if isinstance(value, float):
+            hsv[:, 1:, 2] = hsv[:, 1:, 2].astype(float) * value
+        else:
+            assert isinstance(value, int)
+            hsv[:, 1:, 2] = value
+        cmap = hsv2rgb(hsv).reshape(-1, 3)
+    return cmap
diff --git a/PPOCRLabel/libs/shape.py b/PPOCRLabel/libs/shape.py
index 528b1102b010ceef8fa1057309e652010a91376d..fc8ab5ec4d7ff2836034d9c7e01acaf49dfe7aa0 100644
--- a/PPOCRLabel/libs/shape.py
+++ b/PPOCRLabel/libs/shape.py
@@ -46,12 +46,13 @@ class Shape(object):
     point_size = 8
     scale = 1.0
 
-    def __init__(self, label=None, line_color=None, difficult=False, paintLabel=False):
+    def __init__(self, label=None, line_color=None, difficult=False, key_cls="None", paintLabel=False):
         self.label = label
         self.points = []
         self.fill = False
         self.selected = False
         self.difficult = difficult
+        self.key_cls = key_cls
         self.paintLabel = paintLabel
         self.locked = False
         self.direction = 0
@@ -224,6 +225,7 @@ class Shape(object):
         if self.fill_color != Shape.fill_color:
             shape.fill_color = self.fill_color
         shape.difficult = self.difficult
+        shape.key_cls = self.key_cls
         return shape
 
     def __len__(self):
diff --git a/PPOCRLabel/libs/unique_label_qlist_widget.py b/PPOCRLabel/libs/unique_label_qlist_widget.py
new file mode 100644
index 0000000000000000000000000000000000000000..f1eff7a172d3fecf9c18579ccead5f62ba65ecd5
--- /dev/null
+++ b/PPOCRLabel/libs/unique_label_qlist_widget.py
@@ -0,0 +1,45 @@
+# -*- encoding: utf-8 -*-
+
+from PyQt5.QtCore import Qt
+from PyQt5 import QtWidgets
+
+
+class EscapableQListWidget(QtWidgets.QListWidget):
+    def keyPressEvent(self, event):
+        super(EscapableQListWidget, self).keyPressEvent(event)
+        if event.key() == Qt.Key_Escape:
+            self.clearSelection()
+
+
+class UniqueLabelQListWidget(EscapableQListWidget):
+    def mousePressEvent(self, event):
+        super(UniqueLabelQListWidget, self).mousePressEvent(event)
+        if not self.indexAt(event.pos()).isValid():
+            self.clearSelection()
+
+    def findItemsByLabel(self, label, get_row=False):
+        items = []
+        for row in range(self.count()):
+            item = self.item(row)
+            if item.data(Qt.UserRole) == label:
+                items.append(item)
+                if get_row:
+                    return row
+        return items
+
+    def createItemFromLabel(self, label):
+        item = QtWidgets.QListWidgetItem()
+        item.setData(Qt.UserRole, label)
+        return item
+
+    def setItemLabel(self, item, label, color=None):
+        qlabel = QtWidgets.QLabel()
+        if color is None:
+            qlabel.setText(f"{label}")
+        else:
+            qlabel.setText('<font color="#{:02x}{:02x}{:02x}">●</font> {} '.format(*color, label))
+        qlabel.setAlignment(Qt.AlignBottom)
+
+        item.setSizeHint(qlabel.sizeHint())
+
+        self.setItemWidget(item, qlabel)
diff --git a/PPOCRLabel/libs/utils.py b/PPOCRLabel/libs/utils.py
index 9fab41d3ffee33b8f86f9576507eb13b18806496..2510520caa8048d7787d7c8f65df2885d76026f7 100644
--- a/PPOCRLabel/libs/utils.py
+++ b/PPOCRLabel/libs/utils.py
@@ -10,30 +10,26 @@
 # SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 # CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
-from math import sqrt
-from libs.ustr import ustr
 import hashlib
+import os
 import re
 import sys
+from math import sqrt
+
 import cv2
 import numpy as np
-import os
+from PyQt5.QtCore import QRegExp, QT_VERSION_STR
+from PyQt5.QtGui import QIcon, QRegExpValidator, QColor
+from PyQt5.QtWidgets import QPushButton, QAction, QMenu
+from libs.ustr import ustr
 
-__dir__ = os.path.dirname(os.path.abspath(__file__)) # 获取本程序文件路径
+__dir__ = os.path.dirname(os.path.abspath(__file__))  # 获取本程序文件路径
 __iconpath__ = os.path.abspath(os.path.join(__dir__, '../resources/icons'))
 
-try:
-    from PyQt5.QtGui import *
-    from PyQt5.QtCore import *
-    from PyQt5.QtWidgets import *
-except ImportError:
-    from PyQt4.QtGui import *
-    from PyQt4.QtCore import *
-
 
 def newIcon(icon, iconSize=None):
     if iconSize is not None:
-        return QIcon(QIcon(__iconpath__ + "/" + icon + ".png").pixmap(iconSize,iconSize))
+        return QIcon(QIcon(__iconpath__ + "/" + icon + ".png").pixmap(iconSize, iconSize))
     else:
         return QIcon(__iconpath__ + "/" + icon + ".png")
 
@@ -105,24 +101,25 @@ def generateColorByText(text):
     s = ustr(text)
     hashCode = int(hashlib.sha256(s.encode('utf-8')).hexdigest(), 16)
     r = int((hashCode / 255) % 255)
-    g = int((hashCode / 65025)  % 255)
-    b = int((hashCode / 16581375)  % 255)
+    g = int((hashCode / 65025) % 255)
+    b = int((hashCode / 16581375) % 255)
     return QColor(r, g, b, 100)
 
+
 def have_qstring():
     '''p3/qt5 get rid of QString wrapper as py3 has native unicode str type'''
     return not (sys.version_info.major >= 3 or QT_VERSION_STR.startswith('5.'))
 
-def util_qt_strlistclass():
-    return QStringList if have_qstring() else list
 
-def natural_sort(list, key=lambda s:s):
+def natural_sort(list, key=lambda s: s):
     """
     Sort the list into natural alphanumeric order.
     """
+
     def get_alphanum_key_func(key):
         convert = lambda text: int(text) if text.isdigit() else text
         return lambda s: [convert(c) for c in re.split('([0-9]+)', key(s))]
+
     sort_key = get_alphanum_key_func(key)
     list.sort(key=sort_key)
 
@@ -133,8 +130,8 @@ def get_rotate_crop_image(img, points):
     d = 0.0
     for index in range(-1, 3):
         d += -0.5 * (points[index + 1][1] + points[index][1]) * (
-                    points[index + 1][0] - points[index][0])
-    if d < 0: # counterclockwise
+                points[index + 1][0] - points[index][0])
+    if d < 0:  # counterclockwise
         tmp = np.array(points)
         points[1], points[3] = tmp[3], tmp[1]
 
@@ -163,10 +160,11 @@ def get_rotate_crop_image(img, points):
     except Exception as e:
         print(e)
 
+
 def stepsInfo(lang='en'):
     if lang == 'ch':
         msg = "1. 安装与运行：使用上述命令安装与运行程序。\n" \
-              "2. 打开文件夹：在菜单栏点击 “文件” - 打开目录 选择待标记图片的文件夹.\n"\
+              "2. 打开文件夹：在菜单栏点击 “文件” - 打开目录 选择待标记图片的文件夹.\n" \
               "3. 自动标注：点击 ”自动标注“，使用PPOCR超轻量模型对图片文件名前图片状态为 “X” 的图片进行自动标注。\n" \
               "4. 手动标注：点击 “矩形标注”（推荐直接在英文模式下点击键盘中的 “W”)，用户可对当前图片中模型未检出的部分进行手动" \
               "绘制标记框。点击键盘P，则使用四点标注模式（或点击“编辑” - “四点标注”），用户依次点击4个点后，双击左键表示标注完成。\n" \
@@ -181,25 +179,26 @@ def stepsInfo(lang='en'):
 
     else:
         msg = "1. Build and launch using the instructions above.\n" \
-              "2. Click 'Open Dir' in Menu/File to select the folder of the picture.\n"\
-              "3. Click 'Auto recognition', use PPOCR model to automatically annotate images which marked with 'X' before the file name."\
-              "4. Create Box:\n"\
-                   "4.1 Click 'Create RectBox' or press 'W' in English keyboard mode to draw a new rectangle detection box. Click and release left mouse to select a region to annotate the text area.\n"\
-                   "4.2 Press 'P' to enter four-point labeling mode which enables you to create any four-point shape by clicking four points with the left mouse button in succession and DOUBLE CLICK the left mouse as the signal of labeling completion.\n"\
-              "5. After the marking frame is drawn, the user clicks 'OK', and the detection frame will be pre-assigned a TEMPORARY label.\n"\
-              "6. Click re-Recognition, model will rewrite ALL recognition results in ALL detection box.\n"\
-              "7. Double click the result in 'recognition result' list to manually change inaccurate recognition results.\n"\
-              "8. Click 'Save', the image status will switch to '√',then the program automatically jump to the next.\n"\
-              "9. Click 'Delete Image' and the image will be deleted to the recycle bin.\n"\
-              "10. Labeling result: After closing the application or switching the file path, the manually saved label will be stored in *Label.txt* under the opened picture folder.\n"\
-              "    Click PaddleOCR-Save Recognition Results in the menu bar, the recognition training data of such pictures will be saved in the *crop_img* folder, and the recognition label will be saved in *rec_gt.txt*.\n" 
+              "2. Click 'Open Dir' in Menu/File to select the folder of the picture.\n" \
+              "3. Click 'Auto recognition', use PPOCR model to automatically annotate images which marked with 'X' before the file name." \
+              "4. Create Box:\n" \
+              "4.1 Click 'Create RectBox' or press 'W' in English keyboard mode to draw a new rectangle detection box. Click and release left mouse to select a region to annotate the text area.\n" \
+              "4.2 Press 'P' to enter four-point labeling mode which enables you to create any four-point shape by clicking four points with the left mouse button in succession and DOUBLE CLICK the left mouse as the signal of labeling completion.\n" \
+              "5. After the marking frame is drawn, the user clicks 'OK', and the detection frame will be pre-assigned a TEMPORARY label.\n" \
+              "6. Click re-Recognition, model will rewrite ALL recognition results in ALL detection box.\n" \
+              "7. Double click the result in 'recognition result' list to manually change inaccurate recognition results.\n" \
+              "8. Click 'Save', the image status will switch to '√',then the program automatically jump to the next.\n" \
+              "9. Click 'Delete Image' and the image will be deleted to the recycle bin.\n" \
+              "10. Labeling result: After closing the application or switching the file path, the manually saved label will be stored in *Label.txt* under the opened picture folder.\n" \
+              "    Click PaddleOCR-Save Recognition Results in the menu bar, the recognition training data of such pictures will be saved in the *crop_img* folder, and the recognition label will be saved in *rec_gt.txt*.\n"
 
     return msg
 
+
 def keysInfo(lang='en'):
     if lang == 'ch':
         msg = "快捷键\t\t\t说明\n" \
-              "———————————————————————\n"\
+              "———————————————————————\n" \
               "Ctrl + shift + R\t\t对当前图片的所有标记重新识别\n" \
               "W\t\t\t新建矩形框\n" \
               "Q\t\t\t新建四点框\n" \
@@ -223,17 +222,17 @@ def keysInfo(lang='en'):
               "———————————————————————\n" \
               "Ctrl + shift + R\t\tRe-recognize all the labels\n" \
               "\t\t\tof the current image\n" \
-              "\n"\
+              "\n" \
               "W\t\t\tCreate a rect box\n" \
               "Q\t\t\tCreate a four-points box\n" \
               "Ctrl + E\t\tEdit label of the selected box\n" \
               "Ctrl + R\t\tRe-recognize the selected box\n" \
               "Ctrl + C\t\tCopy and paste the selected\n" \
               "\t\t\tbox\n" \
-              "\n"\
+              "\n" \
               "Ctrl + Left Mouse\tMulti select the label\n" \
               "Button\t\t\tbox\n" \
-              "\n"\
+              "\n" \
               "Backspace\t\tDelete the selected box\n" \
               "Ctrl + V\t\tCheck image\n" \
               "Ctrl + Shift + d\tDelete image\n" \
@@ -245,4 +244,4 @@ def keysInfo(lang='en'):
               "———————————————————————\n" \
               "Notice:For Mac users, use the 'Command' key instead of the 'Ctrl' key"
 
-    return msg
\ No newline at end of file
+    return msg
diff --git a/PPOCRLabel/resources/strings/strings-en.properties b/PPOCRLabel/resources/strings/strings-en.properties
index f59e43aa92ff9ccd04686e9c16db181983b57b2c..3c4eda65a32e1048405041667ba61bdb639bfd7b 100644
--- a/PPOCRLabel/resources/strings/strings-en.properties
+++ b/PPOCRLabel/resources/strings/strings-en.properties
@@ -106,4 +106,7 @@ undo=Undo
 undoLastPoint=Undo Last Point
 autoSaveMode=Auto Export Label Mode
 lockBox=Lock selected box/Unlock all box
-lockBoxDetail=Lock selected box/Unlock all box
\ No newline at end of file
+lockBoxDetail=Lock selected box/Unlock all box
+keyListTitle=Key List
+keyDialogTip=Enter object label
+keyChange=Change Box Key
diff --git a/PPOCRLabel/resources/strings/strings-zh-CN.properties b/PPOCRLabel/resources/strings/strings-zh-CN.properties
index d8bd9d4bff02748397d7a57a6205e67ff69779c2..a7c30368b87354cbae81b2cdead8ad31b2a8c1eb 100644
--- a/PPOCRLabel/resources/strings/strings-zh-CN.properties
+++ b/PPOCRLabel/resources/strings/strings-zh-CN.properties
@@ -107,3 +107,6 @@ undoLastPoint=撤销上个点
 autoSaveMode=自动导出标记结果
 lockBox=锁定框/解除锁定框
 lockBoxDetail=若当前没有框处于锁定状态则锁定选中的框，若存在锁定框则解除所有锁定框的锁定状态
+keyListTitle=关键词列表
+keyDialogTip=请输入类型名称
+keyChange=更改Box关键字类别
\ No newline at end of file