diff --git a/components/lib/inputnumber/InputNumber.vue b/components/lib/inputnumber/InputNumber.vue
index f8f639c2a..510feedb5 100755
--- a/components/lib/inputnumber/InputNumber.vue
+++ b/components/lib/inputnumber/InputNumber.vue
@@ -906,7 +906,7 @@ export default {
                 this._decimal.lastIndex = 0;
 
                 if (this.suffixChar) {
-                    return val1.replace(this.suffixChar, '').split(this._decimal)[0] + val2.replace(this.suffixChar, '').slice(decimalCharIndex) + this.suffixChar;
+                    return decimalCharIndex !== -1 ? val1.replace(this.suffixChar, '').split(this._decimal)[0] + val2.replace(this.suffixChar, '').slice(decimalCharIndex) + this.suffixChar : val1;
                 } else {
                     return decimalCharIndex !== -1 ? val1.split(this._decimal)[0] + val2.slice(decimalCharIndex) : val1;
                 }