diff --git a/.changeset/eight-bobcats-reply.md b/.changeset/eight-bobcats-reply.md
new file mode 100644
index 00000000..2ca241a5
--- /dev/null
+++ b/.changeset/eight-bobcats-reply.md
@@ -0,0 +1,5 @@
+---
+'@watermark-design/core': patch
+---
+
+fix correct clearCanvas method to handle devicePixelRatio scaling
diff --git a/packages/core/src/watermark-canvas.ts b/packages/core/src/watermark-canvas.ts
index 4867344a..559478c5 100644
--- a/packages/core/src/watermark-canvas.ts
+++ b/packages/core/src/watermark-canvas.ts
@@ -42,7 +42,10 @@ class WatermarkCanvas {
       throw new Error('get context error');
     }
     ctx.restore();
+    ctx.resetTransform();
     ctx.clearRect(0, 0, canvas.width, canvas.height);
+    const ratio = window.devicePixelRatio || 1;
+    ctx.setTransform(ratio, 0, 0, ratio, 0, 0);
   }
 
   getCanvas(): HTMLCanvasElement {