diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..359bb53
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..e82920a
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.13 (pythonProject)" project-jdk-type="Python SDK" />
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..17bbc19
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/pygame_lesson3_diy3.iml" filepath="$PROJECT_DIR$/.idea/pygame_lesson3_diy3.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/pygame_lesson3_diy3.iml b/.idea/pygame_lesson3_diy3.iml
new file mode 100644
index 0000000..fc1fe8b
--- /dev/null
+++ b/.idea/pygame_lesson3_diy3.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="jdk" jdkName="Python 3.13 (pythonProject)" jdkType="Python SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/snake.py b/snake.py
index 537316e..6217380 100644
--- a/snake.py
+++ b/snake.py
@@ -1,4 +1,5 @@
 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
@@ -19,6 +20,8 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
+apple_x = 360   #苹果横坐标
+apple_y = 300   #苹果纵坐标
 
 setheading = "right"
 snake_head = right
@@ -52,7 +55,14 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
+    #贪吃蛇吃到了苹果
+    if x == apple_x and y == apple_y:
+        num1 = random.randint(1, 22)  #横排的几个格子 
+        num2 = random.randint(1, 16)  #纵排的几个格子    
+        apple_x = 30*num1-30  #苹果的X坐标
+        apple_y = 30*num2-30  #苹果的Y坐标
+    else:
+        position.pop(0)   
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -62,7 +72,8 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x,apple_y))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(3)
+    
\ No newline at end of file