diff --git a/addfood.asm b/addfood.asm
index 84e66b1..836dbe5 100644
--- a/addfood.asm
+++ b/addfood.asm
@@ -46,8 +46,8 @@ addfood:
 	bmi +
 	sbc #$c0
 	tay
-*	lda (_ptr), y
-	iny
+*	iny
+	lda (_ptr), y
 	cmp #csps
 	bne -
 	lda #crnd
diff --git a/main.asm b/main.asm
index 9444962..1a0a89f 100644
--- a/main.asm
+++ b/main.asm
@@ -27,7 +27,7 @@ main:
 	jsr printscore	; 打印分数
 	lda d
 	sta prev_d		; 备份前一个按键
-	lda #32
+	lda #20
 	jsr delay		; 延时期间最后一个按键位于d
 	lda d
 	cmp #ed_g
diff --git a/snake.prg b/snake.prg
index 35d4b29..53b4c3f 100644
Binary files a/snake.prg and b/snake.prg differ