diff --git a/web/src/assets/scripts/Snake.js b/web/src/assets/scripts/Snake.js
index cbd8782..b2a7a0f 100644
--- a/web/src/assets/scripts/Snake.js
+++ b/web/src/assets/scripts/Snake.js
@@ -181,13 +181,15 @@ export class Snake extends AcGameObject {
             if (Math.abs(a.x - b.x) < this.eps && Math.abs(a.y - b.y) < this.eps) 
                 continue;
             
+            // 定义蛇身结点宽度比例
+            const snake_node_width = 0.7;
             // 如果两个目标点在竖方向重合(横坐标一致,纵坐标不重合)时的画法
             if (Math.abs(a.x - b.x) < this.eps) {
-                ctx.fillRect((a.x - 0.35) * L, Math.min(a.y, b.y) * L, L * 0.7, Math.abs(a.y - b.y) * L);
+                ctx.fillRect((a.x - snake_node_width / 2) * L, Math.min(a.y, b.y) * L, L * snake_node_width, Math.abs(a.y - b.y) * L);
             }
             // 横方向的画法
             else {
-                ctx.fillRect(Math.min(a.x, b.x) * L, (a.y - 0.35) * L, Math.abs(a.x - b.x) * L, L * 0.7);
+                ctx.fillRect(Math.min(a.x, b.x) * L, (a.y - snake_node_width / 2) * L, Math.abs(a.x - b.x) * L, L * snake_node_width);
             }
         }
     }