diff --git a/Assets/ManagedResources/~Lua/Modules/Practice/PracticePanel.lua b/Assets/ManagedResources/~Lua/Modules/Practice/PracticePanel.lua
index 2d197ee738..f52bb9cd69 100644
--- a/Assets/ManagedResources/~Lua/Modules/Practice/PracticePanel.lua
+++ b/Assets/ManagedResources/~Lua/Modules/Practice/PracticePanel.lua
@@ -60,7 +60,7 @@ function Practice:InitComponent()
     self.mask = Util.GetGameObject(self.gameObject, "mask")
 
     self.treeBtn = Util.GetGameObject(self.gameObject, "Btns/treeBtn")
-    Util.GetGameObject(self.treeBtn,"treebtn"):GetComponent("Image").sprite = this.spLoader:LoadSprite("j_jianmushenshu_anniu_01_zh")
+    Util.GetGameObject(self.treeBtn,"treebtn"):GetComponent("Image").sprite = self.spLoader:LoadSprite("j_jianmushenshu_anniu_01_zh")
     self.treeRed = Util.GetGameObject(self.treeBtn, "redPoint")
 end