diff --git a/pkg/core/region.go b/pkg/core/region.go
index 8a552859fb22..51d176d8a919 100644
--- a/pkg/core/region.go
+++ b/pkg/core/region.go
@@ -958,7 +958,7 @@ func (r *RegionsInfo) AtomicCheckAndPutRegion(region *RegionInfo, trace RegionHe
 	origin, overlaps, rangeChanged := r.setRegionLocked(region, true, ols...)
 	r.t.Unlock()
 	trace.OnSetRegionFinished()
-	r.UpdateSubTree(region, origin, overlaps, rangeChanged)
+	go r.UpdateSubTree(region, origin, overlaps, rangeChanged)
 	trace.OnUpdateSubTreeFinished()
 	return overlaps, nil
 }