diff --git a/diy1.py b/diy1.py
index acf62a2..db3c4a2 100644
--- a/diy1.py
+++ b/diy1.py
@@ -10,12 +10,13 @@ pen.write("你好, \n我在玛酷机器人, 等你",font=("times",35,"normal")
 pen1=turtle.Pen()
 pen1.pensize(5)
 pen1.pencolor("red") 
+len=20
 pen1.left(45)
-pen1.forward(100)
+pen1.forward(len*2)
 
-pen1.circle(50,180)
+pen1.circle(len,180)
 pen1.right(90) 
-pen1.circle(50,180)
-pen1.forward(100)
+pen1.circle(len,180)
+pen1.forward(len*2)
 pen1.hideturtle()
 turtle.done()