diff --git a/PPOCRLabel/PPOCRLabel.py b/PPOCRLabel/PPOCRLabel.py
index 11eda1a954d109d2155481d4a6d432983df8e97f..a2906e71756e4f4cdd1d254c693b2cce70fe8b15 100644
--- a/PPOCRLabel/PPOCRLabel.py
+++ b/PPOCRLabel/PPOCRLabel.py
@@ -162,11 +162,14 @@ class MainWindow(QMainWindow):
 
         #  ================== 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)
+
+            # set key list height
+            key_list_height = int(QApplication.desktop().height() // 4)
+            if key_list_height < 50:
+                key_list_height = 50
+            self.keyList.setMaximumHeight(key_list_height)
+
             self.keyListDockName = getStr('keyListTitle')
             self.keyListDock = QDockWidget(self.keyListDockName, self)
             self.keyListDock.setWidget(self.keyList)
diff --git a/PPOCRLabel/libs/unique_label_qlist_widget.py b/PPOCRLabel/libs/unique_label_qlist_widget.py
index f1eff7a172d3fecf9c18579ccead5f62ba65ecd5..07ae05fe67d8b1a924d04666220e33f664891e83 100644
--- a/PPOCRLabel/libs/unique_label_qlist_widget.py
+++ b/PPOCRLabel/libs/unique_label_qlist_widget.py
@@ -1,6 +1,6 @@
 # -*- encoding: utf-8 -*-
 
-from PyQt5.QtCore import Qt
+from PyQt5.QtCore import Qt, QSize
 from PyQt5 import QtWidgets
 
 
@@ -40,6 +40,7 @@ class UniqueLabelQListWidget(EscapableQListWidget):
             qlabel.setText('<font color="#{:02x}{:02x}{:02x}">●</font> {} '.format(*color, label))
         qlabel.setAlignment(Qt.AlignBottom)
 
-        item.setSizeHint(qlabel.sizeHint())
+        # item.setSizeHint(qlabel.sizeHint())
+        item.setSizeHint(QSize(25, 25))
 
         self.setItemWidget(item, qlabel)