diff --git a/examples/feature-examples/src/pages/grid/index.tsx b/examples/feature-examples/src/pages/grid/index.tsx
index 22f02e0f1..d01c6e505 100644
--- a/examples/feature-examples/src/pages/grid/index.tsx
+++ b/examples/feature-examples/src/pages/grid/index.tsx
@@ -121,7 +121,7 @@ export default function SelectionSelectExample() {
   const lfRef = useRef<LogicFlow>()
   const [gridVisible, setGridVisible] = useState(true)
   const [gridType, setGridType] = useState<'dot' | 'mesh'>('dot')
-  const [gridSize, setGridSize] = useState(10)
+  const [gridSize, setGridSize] = useState(20)
   const containerRef = useRef<HTMLDivElement>(null)
 
   // 初始化 LogicFlow
diff --git a/packages/core/src/view/overlay/Grid.tsx b/packages/core/src/view/overlay/Grid.tsx
index 80161cafc..1c6e3090b 100644
--- a/packages/core/src/view/overlay/Grid.tsx
+++ b/packages/core/src/view/overlay/Grid.tsx
@@ -53,7 +53,7 @@ export class Grid extends Component<IProps> {
       <path
         d={d}
         stroke={color}
-        strokeWidth={strokeWidth}
+        strokeWidth={strokeWidth / 2}
         opacity={opacity}
         fill="transparent"
       />