diff --git a/src/util.ts b/src/util.ts
index ede7901f..ede3b454 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -74,9 +74,14 @@ export function convertOptions(
 ): InternalDataNode[] {
   function injectValue(list: DataNode[], parentValue = ''): InternalDataNode[] {
     return (list || []).map(option => {
-      const newValue = parentValue
-        ? connectValue([parentValue, option[fieldValue]])
-        : option[fieldValue];
+      let newValue = option[fieldValue];
+      if (parentValue) {
+        newValue = connectValue([parentValue, option[fieldValue]]);
+      } else if (typeof newValue === 'number') {
+        // Since we will convert all the value to string, we need get this
+        newValue = String(newValue);
+      }
+
       const cloneOption = {
         ...option,
         [fieldValue]: newValue,
diff --git a/tests/index.spec.tsx b/tests/index.spec.tsx
index 74f05419..65b59acf 100644
--- a/tests/index.spec.tsx
+++ b/tests/index.spec.tsx
@@ -780,5 +780,6 @@ describe('Cascader.Basic', () => {
 
     wrapper.clickOption(0, 0);
     expect(onValueChange).toHaveBeenCalledWith([1], expect.anything());
+    expect(wrapper.find('.rc-cascader-selection-item').text()).toEqual('One');
   });
 });