diff --git a/__tests__/unit/scales/point.spec.ts b/__tests__/unit/scales/point.spec.ts
index 01a4b27..3b19b97 100644
--- a/__tests__/unit/scales/point.spec.ts
+++ b/__tests__/unit/scales/point.spec.ts
@@ -32,6 +32,20 @@ describe('point scale test', () => {
     expect(scale.getBandWidth()).toStrictEqual(0);
   });
 
+  test('test options.paddingInner always equals to 1', () => {
+    const scale = new Point({
+      // @ts-ignore
+      paddingInner: 0,
+      domain: ['A', 'B', 'C'],
+      padding: 0.6,
+      align: 1,
+      range: [0, 500],
+    });
+    expect(scale.map('A')).toStrictEqual(187.5);
+    expect(scale.getStep()).toStrictEqual(156.25);
+    expect(scale.getBandWidth()).toStrictEqual(0);
+  });
+
   test('clone() returns a Point scale with same and independent options', () => {
     const x1 = new Point();
     const x2 = x1.clone();
diff --git a/package.json b/package.json
index 6075ee5..80f40e6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@antv/scale",
-  "version": "0.4.8",
+  "version": "0.4.9",
   "description": "Toolkit for mapping abstract data into visual representation.",
   "license": "MIT",
   "main": "lib/index.js",
diff --git a/src/scales/point.ts b/src/scales/point.ts
index c767598..88e00bc 100644
--- a/src/scales/point.ts
+++ b/src/scales/point.ts
@@ -40,8 +40,9 @@ export class Point extends Band<PointOptions & BandOptions> {
     super(options);
   }
 
+  // Point 的 paddingInner 只能是1，不能被覆盖
   protected getPaddingInner() {
-    return this.options.paddingInner;
+    return 1;
   }
 
   public clone() {