diff --git a/packages/components/slider/src/composables/use-slide.ts b/packages/components/slider/src/composables/use-slide.ts
index c2ec002b43..12700ba884 100644
--- a/packages/components/slider/src/composables/use-slide.ts
+++ b/packages/components/slider/src/composables/use-slide.ts
@@ -113,8 +113,10 @@ export const useSlide = (
   }
 
   const setFirstValue = (firstValue: number | undefined) => {
-    initData.firstValue = firstValue!
-    _emit(props.range ? [minValue.value, maxValue.value] : firstValue!)
+    initData.firstValue = firstValue ?? props.min
+    _emit(
+      props.range ? [minValue.value, maxValue.value] : firstValue ?? props.min
+    )
   }
 
   const setSecondValue = (secondValue: number) => {