diff --git a/packages/slider/index.ts b/packages/slider/index.ts
index f0c04cb1..ac8babaa 100644
--- a/packages/slider/index.ts
+++ b/packages/slider/index.ts
@@ -55,13 +55,14 @@ VantComponent({
       this.touchMove(event);
       this.getRect('.van-slider').then((rect: wx.BoundingClientRectCallbackResult) => {
         const diff = this.deltaX / rect.width * 100;
-        this.updateValue(this.startValue + diff, false, true);
+        this.newValue = this.startValue + diff;
+        this.updateValue(this.newValue, false, true);
       });
     },
 
     onTouchEnd() {
       if (this.data.disabled) return;
-      this.updateValue(this.data.value, true);
+      this.updateValue(this.newValue, true);
     },
 
     onClick(event: Weapp.TouchEvent) {