diff --git a/Exercise3/pull_up_1.py b/Exercise3/pull_up_1.py
index 9efb09e..a0e4007 100644
--- a/Exercise3/pull_up_1.py
+++ b/Exercise3/pull_up_1.py
@@ -45,7 +45,7 @@ class PullUp_1(BaseExercise):
         self.initial_wrist_2_y = 0
 
         # 引体向上参数
-        self.corner = (0, 480, 260, 380)
+        self.corner = (0, 480, 240, 400)
         MediapipeAlgorithmPlugin.set_corner(corner=self.corner)
         MediapipeAlgorithmPlugin.set_config(config=self.config)
 
diff --git a/Exercise3/pull_up_2.py b/Exercise3/pull_up_2.py
index d93f211..efbdf6a 100644
--- a/Exercise3/pull_up_2.py
+++ b/Exercise3/pull_up_2.py
@@ -40,7 +40,7 @@ class PullUp_2(BaseExercise):
         self.initial_height_right = 0
         self.initial_wrist_y = 0
         # 引体向上参数
-        self.corner = (0, 480, 260, 380)
+        self.corner = (0, 480, 240, 400)
         MediapipeAlgorithmPlugin.set_corner(corner=self.corner)
         MediapipeAlgorithmPlugin.set_config(config=self.config)
 
diff --git a/Exercise3/pull_up_3.py b/Exercise3/pull_up_3.py
index 302a213..878eec1 100644
--- a/Exercise3/pull_up_3.py
+++ b/Exercise3/pull_up_3.py
@@ -40,7 +40,7 @@ class PullUp_3(BaseExercise):
         self.initial_height_right = 0
         self.initial_wrist_y = 0
         # 引体向上参数
-        self.corner = (0, 480, 260, 380)
+        self.corner = (0, 480, 240, 400)
         MediapipeAlgorithmPlugin.set_corner(corner=self.corner)
         MediapipeAlgorithmPlugin.set_config(config=self.config)