diff --git a/main.asm b/main.asm
index c9a6ede..8d42e17 100644
--- a/main.asm
+++ b/main.asm
@@ -48,6 +48,10 @@ main:
 	jsr printscore	; 打印分数
 	lda #csnk
 	sta field + 11*40 + 19	; 初始化蛇位置
+	lda #<[field + 11*40 + 19]
+	ldx #>[field + 11*40 + 19]
+	sta shead
+	stx shead+1
 	lda #1
 	sta c			; 初始化蛇长为1
 	jsr printfield	; 打印蛇，包括边框