diff --git a/packages/input-number/src/input-number.vue b/packages/input-number/src/input-number.vue
index 5aa4b89aa..8f2a9873d 100644
--- a/packages/input-number/src/input-number.vue
+++ b/packages/input-number/src/input-number.vue
@@ -216,7 +216,8 @@
       innerInput.setAttribute('aria-disabled', this.inputNumberDisabled);
     },
     updated() {
-      let innerInput = this.$refs.input.$refs.input;
+      if (!this.$refs || !this.$refs.input) return;
+      const innerInput = this.$refs.input.$refs.input;
       innerInput.setAttribute('aria-valuenow', this.currentValue);
     }
   };