diff --git a/src/checkbox/CheckboxGroup.tsx b/src/checkbox/CheckboxGroup.tsx
index a80f3608ff..9427761f93 100644
--- a/src/checkbox/CheckboxGroup.tsx
+++ b/src/checkbox/CheckboxGroup.tsx
@@ -152,21 +152,17 @@ const CheckboxGroup = <T extends CheckboxGroupValue = CheckboxGroupValue>(props:
       <CheckContext.Provider value={context}>
         {useOptions
           ? options.map((v: any, index) => {
-              const type = typeof v;
-              switch (type) {
-                case 'string': {
-                  const vs = v as string;
+              switch (typeof v) {
+                case 'string':
                   return (
-                    <Checkbox key={index} label={vs} value={vs}>
+                    <Checkbox key={index} label={v} value={v}>
                       {v}
                     </Checkbox>
                   );
-                }
                 case 'number': {
-                  const vs = v as number;
                   return (
-                    <Checkbox key={index} label={vs} value={vs}>
-                      {v}
+                    <Checkbox key={index} label={v} value={v}>
+                      {String(v)}
                     </Checkbox>
                   );
                 }
diff --git a/src/checkbox/__tests__/checkbox.test.tsx b/src/checkbox/__tests__/checkbox.test.tsx
index 9a2a7b2d14..c73dc64044 100644
--- a/src/checkbox/__tests__/checkbox.test.tsx
+++ b/src/checkbox/__tests__/checkbox.test.tsx
@@ -76,6 +76,7 @@ describe('CheckboxGroup', () => {
           { value: '广州', label: '广州', disabled: true },
           { value: '北京', label: '北京', name: '北京' },
           1,
+          0,
           '重庆',
           { label: '全选', checkAll: true },
         ]}
@@ -83,6 +84,9 @@ describe('CheckboxGroup', () => {
     );
     fireEvent.click(container.firstChild.lastChild);
     expect(container.firstChild.firstChild).toHaveClass('t-is-checked');
+    const options = container.firstChild.childNodes;
+    // 0 is rendered as string '0'
+    expect(options.item(4).textContent).toBe('0');
   });
 
   test('value is string', () => {