diff --git a/components/_util/isNumeric.ts b/components/_util/isNumeric.ts
index 2545ed60f9..51530e2073 100644
--- a/components/_util/isNumeric.ts
+++ b/components/_util/isNumeric.ts
@@ -1,4 +1,4 @@
-const isNumeric = (value: any): boolean => {
+const isNumeric = <T extends number>(value: any): value is T => {
   return !isNaN(parseFloat(value)) && isFinite(value);
 };