diff --git a/packages/components/input-number/demo/Precision.vue b/packages/components/input-number/demo/Precision.vue
index 54ff63a62..c3b4c8b7c 100644
--- a/packages/components/input-number/demo/Precision.vue
+++ b/packages/components/input-number/demo/Precision.vue
@@ -1,5 +1,6 @@
 <template>
-  <IxInputNumber v-model:value="value" :max="10" :min="1" :precision="2" @change="handleChange"></IxInputNumber>
+  <IxInputNumber v-model:value="value" :max="10" :min="1" :precision="2" :step="0.01" @change="handleChange">
+  </IxInputNumber>
 </template>
 
 <script setup lang="ts">
diff --git a/packages/components/input-number/src/useInputNumber.ts b/packages/components/input-number/src/useInputNumber.ts
index 6c15c5178..284df4d8d 100644
--- a/packages/components/input-number/src/useInputNumber.ts
+++ b/packages/components/input-number/src/useInputNumber.ts
@@ -60,7 +60,7 @@ export function useInputNumber(props: InputNumberProps, config: InputNumberConfi
     let newVal = step
     if (typeof value === 'number' && !Number.isNaN(value)) {
       // Use the toFixed func to ensure numerical accuracy.
-      newVal = parseFloat(value.toFixed(precision.value)) + step
+      newVal = parseFloat((value + step).toFixed(precision.value))
     }
 
     return Math.max(props.min, Math.min(props.max, newVal))