diff --git a/paddle/fluid/API.spec b/paddle/fluid/API.spec
index 581bf50e646510c49332112d10b701efe9277a63..ef0fc764a8cc4f735538b8213056c1278ead95fe 100644
--- a/paddle/fluid/API.spec
+++ b/paddle/fluid/API.spec
@@ -347,7 +347,7 @@ paddle.fluid.layers.generate_mask_labels (ArgSpec(args=['im_info', 'gt_classes',
 paddle.fluid.layers.iou_similarity (ArgSpec(args=['x', 'y', 'name'], varargs=None, keywords=None, defaults=(None,)), ('document', '587845f60c5d97ffdf2dfd21da52eca1'))
 paddle.fluid.layers.box_coder (ArgSpec(args=['prior_box', 'prior_box_var', 'target_box', 'code_type', 'box_normalized', 'name', 'axis'], varargs=None, keywords=None, defaults=('encode_center_size', True, None, 0)), ('document', '032d0f4b7d8f6235ee5d91e473344f0e'))
 paddle.fluid.layers.polygon_box_transform (ArgSpec(args=['input', 'name'], varargs=None, keywords=None, defaults=(None,)), ('document', '0e5ac2507723a0b5adec473f9556799b'))
-paddle.fluid.layers.yolov3_loss (ArgSpec(args=['x', 'gtbox', 'gtlabel', 'anchors', 'anchor_mask', 'class_num', 'ignore_thresh', 'downsample_ratio', 'gtscore', 'use_label_smooth', 'name'], varargs=None, keywords=None, defaults=(None, True, None)), ('document', '57fa96922e42db8f064c3fb77f2255e8'))
+paddle.fluid.layers.yolov3_loss (ArgSpec(args=['x', 'gt_box', 'gt_label', 'anchors', 'anchor_mask', 'class_num', 'ignore_thresh', 'downsample_ratio', 'gt_score', 'use_label_smooth', 'name'], varargs=None, keywords=None, defaults=(None, True, None)), ('document', '059021025283ad1ee6f4d32228cf3e4e'))
 paddle.fluid.layers.yolo_box (ArgSpec(args=['x', 'img_size', 'anchors', 'class_num', 'conf_thresh', 'downsample_ratio', 'name'], varargs=None, keywords=None, defaults=(None,)), ('document', '5566169a5ab993d177792c023c7fb340'))
 paddle.fluid.layers.box_clip (ArgSpec(args=['input', 'im_info', 'name'], varargs=None, keywords=None, defaults=(None,)), ('document', '397e9e02b451d99c56e20f268fa03f2e'))
 paddle.fluid.layers.multiclass_nms (ArgSpec(args=['bboxes', 'scores', 'score_threshold', 'nms_top_k', 'keep_top_k', 'nms_threshold', 'normalized', 'nms_eta', 'background_label', 'name'], varargs=None, keywords=None, defaults=(0.3, True, 1.0, 0, None)), ('document', 'ca7d1107b6c5d2d6d8221039a220fde0'))
diff --git a/python/paddle/fluid/layers/detection.py b/python/paddle/fluid/layers/detection.py
index cf06a117ef9d83a207650abff36c24d7b5aa865b..dcac233f810006828064f064d3911a1c1b9664fc 100644
--- a/python/paddle/fluid/layers/detection.py
+++ b/python/paddle/fluid/layers/detection.py
@@ -605,7 +605,7 @@ def yolov3_loss(x,
         "GTBox": gt_box,
         "GTLabel": gt_label,
     }
-    if gtscore:
+    if gt_score:
         inputs["GTScore"] = gt_score
 
     attrs = {
diff --git a/python/paddle/fluid/tests/test_detection.py b/python/paddle/fluid/tests/test_detection.py
index 7d1b869cf5991dc5ef960ff4d72289979aae158a..e1c4c2eca08d4652ecda8e2579d342818c803f4a 100644
--- a/python/paddle/fluid/tests/test_detection.py
+++ b/python/paddle/fluid/tests/test_detection.py
@@ -474,17 +474,17 @@ class TestYoloDetection(unittest.TestCase):
         program = Program()
         with program_guard(program):
             x = layers.data(name='x', shape=[30, 7, 7], dtype='float32')
-            gtbox = layers.data(name='gtbox', shape=[10, 4], dtype='float32')
-            gtlabel = layers.data(name='gtlabel', shape=[10], dtype='int32')
-            gtscore = layers.data(name='gtscore', shape=[10], dtype='float32')
+            gt_box = layers.data(name='gt_box', shape=[10, 4], dtype='float32')
+            gt_label = layers.data(name='gt_label', shape=[10], dtype='int32')
+            gt_score = layers.data(name='gt_score', shape=[10], dtype='float32')
             loss = layers.yolov3_loss(
                 x,
-                gtbox,
-                gtlabel, [10, 13, 30, 13], [0, 1],
+                gt_box,
+                gt_label, [10, 13, 30, 13], [0, 1],
                 10,
                 0.7,
                 32,
-                gtscore=gtscore,
+                gt_score=gt_score,
                 use_label_smooth=False)
 
             self.assertIsNotNone(loss)