diff --git a/AppScope/app.json5 b/AppScope/app.json5
index 90cd25c60a8aa9c6e00279d34614c4947244149f..d3aa8e6b6ecf6d88a516b2b4bc2eb8ff353dd300 100644
--- a/AppScope/app.json5
+++ b/AppScope/app.json5
@@ -3,7 +3,7 @@
     "bundleName": "cn.openharmony.qrcodegenerator",
     "vendor": "example",
     "versionCode": 1000000,
-    "versionName": "2.0.1-rc.0",
+    "versionName": "2.0.1-rc.1",
     "icon": "$media:app_icon",
     "label": "$string:app_name",
     "distributedNotificationEnabled": true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10b0630630b43e72a22905f91d20e0e350d9a61b..0480753cc19dc0d7e23f15563d5cf1f980aa682e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+## 2.0.1-rc.1
+drawCanvas方法修改逻辑，解决二维码水平不居中问题和底部被遮挡问题
 ## 2.0.1-rc.0
 修复不兼容API9问题
 ## 2.0.1
diff --git a/entry/oh-package.json5 b/entry/oh-package.json5
index 29ff35c901e536486902b3fdb6dbef0577d7e514..3ae30d180fbbf9042a5691d90da14e262afadf5a 100644
--- a/entry/oh-package.json5
+++ b/entry/oh-package.json5
@@ -4,7 +4,7 @@
   "name": "entry",
   "description": "example description",
   "repository": "",
-  "version": "2.0.1-rc.0",
+  "version": "2.0.1-rc.1",
   "dependencies": {
     "@ohos/qr-code-generator": "file:../library"
   }
diff --git a/library/oh-package.json5 b/library/oh-package.json5
index 4cfbe42c9a2e87e1e7f144b600e8429afe423815..9a3037c275e68cae83a53220730b14893bbbe26f 100644
--- a/library/oh-package.json5
+++ b/library/oh-package.json5
@@ -12,6 +12,6 @@
   "description": "High-quality QR Code generator library",
   "main": "index.ets",
   "repository": "https://gitee.com/openharmony-sig/qr-code-generator",
-  "version": "2.0.1-rc.0",
+  "version": "2.0.1-rc.1",
   "dependencies": {}
 }
\ No newline at end of file
diff --git a/library/src/main/ets/components/MainPage/qrcodegen.ets b/library/src/main/ets/components/MainPage/qrcodegen.ets
index a527c438e9a971b645810e0ab57c7adad247a77a..941755eb778d6e01f80d15264f274c96a958c97c 100644
--- a/library/src/main/ets/components/MainPage/qrcodegen.ets
+++ b/library/src/main/ets/components/MainPage/qrcodegen.ets
@@ -253,11 +253,31 @@ namespace qrcodegen {
     public drawCanvas(scale: int, border: int, canvas: CanvasRenderingContext2D): void {
       if (scale <= 0 || border < 0)
       throw new Error("Value out of range");
-      const width: int = (this.size + border * 2) * scale;
-      let canvasWidth = Math.min(canvas.width + canvas.height)
-      for (let y = -border; y < this.size + border; y++) {
-        for (let x = -border; x < this.size + border; x++) {
-          canvas.fillStyle = this.getModule(x, y) ? "#000000" : "#FFFFFF";
+      let x1:number = 0;
+
+      let y1:number = 0;
+      let codeScale: int = (this.size + border * 2) * scale;
+      let canvasMinEdge = Math.min(canvas.height,canvas.width);
+      // 二维码>canvas,需要缩小二维码
+      if (canvasMinEdge < codeScale) {
+        scale = canvasMinEdge/(this.size + border * 2);
+      //   缩小后还有水平居中
+        codeScale = (this.size + border * 2) * scale;
+
+        if (x1 <= 0) {
+          x1 = 0;
+        }
+        if (y1 <= 0) {
+          y1 = 0;
+        }
+      }
+      x1 = Math.round(((canvas.width - codeScale)/2)/scale);
+
+      y1 = Math.round(((canvas.height - codeScale)/2)/scale);
+
+      for (let y = -border + y1; y < this.size + border + y1; y++) {
+        for (let x = -border + x1; x < this.size + border + x1; x++) {
+          canvas.fillStyle = this.getModule(x - x1, y - y1) ? "#000000" : "#FFFFFF";
           canvas.fillRect((x + border) * scale, (y + border) * scale, scale, scale);
         }
       }
diff --git a/oh-package.json5 b/oh-package.json5
index 6401c0e387e5693c1182a24b8291fccd3426b402..f73b4f56f4375984b57485f97eaeace76c2b7319 100644
--- a/oh-package.json5
+++ b/oh-package.json5
@@ -6,6 +6,6 @@
   "name": "qrcodegenerator",
   "description": "example description",
   "repository": "",
-  "version": "2.0.1-rc.0",
+  "version": "2.0.1-rc.1",
   "dependencies": {}
 }