diff --git a/pkg/agent/core/ngt/service/ngt.go b/pkg/agent/core/ngt/service/ngt.go
index 3d815db0bd..1e1a75d291 100644
--- a/pkg/agent/core/ngt/service/ngt.go
+++ b/pkg/agent/core/ngt/service/ngt.go
@@ -1688,10 +1688,29 @@ func (n *ngt) BrokenIndexCount() uint64 {
 	return atomic.LoadUint64(&n.nobic)
 }
 
-// ListObjectFunc applies the input function on each index stored in the kvs.
+// ListObjectFunc applies the input function on each index stored in the kvs and vqueue.
 // Use this function for performing something on each object with caring about the memory usage.
+// If the vector exists in the vqueue, this vector is not indexed so the oid(object ID) is processed as 0.
 func (n *ngt) ListObjectFunc(ctx context.Context, f func(uuid string, oid uint32, ts int64) bool) {
-	n.kvs.Range(ctx, f)
+	dup := make(map[string]bool)
+	n.vq.Range(ctx, func(uuid string, vec []float32, ts int64) (ok bool) {
+		ok = f(uuid, 0, ts)
+		if !ok {
+			return false
+		}
+		var kts int64
+		_, kts, ok = n.kvs.Get(uuid)
+		if ok && ts > kts {
+			dup[uuid] = true
+		}
+		return true
+	})
+	n.kvs.Range(ctx, func(uuid string, oid uint32, ts int64) (ok bool) {
+		if dup[uuid] {
+			return true
+		}
+		return f(uuid, oid, ts)
+	})
 }
 
 func (n *ngt) toSearchResponse(sr []core.SearchResult) (res *payload.Search_Response, err error) {
diff --git a/pkg/agent/core/ngt/service/vqueue/queue.go b/pkg/agent/core/ngt/service/vqueue/queue.go
index ee99f3758c..5d97511f6c 100644
--- a/pkg/agent/core/ngt/service/vqueue/queue.go
+++ b/pkg/agent/core/ngt/service/vqueue/queue.go
@@ -34,6 +34,7 @@ type Queue interface {
 	PushInsert(uuid string, vector []float32, date int64) error
 	PushDelete(uuid string, date int64) error
 	GetVector(uuid string) (vec []float32, timestamp int64, exists bool)
+	Range(ctx context.Context, f func(uuid string, vector []float32, ts int64) bool)
 	RangePopInsert(ctx context.Context, now int64, f func(uuid string, vector []float32, date int64) bool)
 	RangePopDelete(ctx context.Context, now int64, f func(uuid string) bool)
 	IVExists(uuid string) bool
@@ -255,6 +256,20 @@ func (v *vqueue) RangePopDelete(ctx context.Context, now int64, f func(uuid stri
 	}
 }
 
+// Range calls f sequentially for each key and value present in the vqueue.
+func (v *vqueue) Range(ctx context.Context, f func(uuid string, vector []float32, ts int64) bool) {
+	v.il.Range(func(uuid string, idx *index) bool {
+		if idx == nil {
+			return true
+		}
+		didx, ok := v.dl.Load(uuid)
+		if !ok || (didx != nil && idx.date > didx.date) {
+			return f(uuid, idx.vector, idx.date)
+		}
+		return true
+	})
+}
+
 // IVQLen returns the number of uninserted indexes stored in the insert queue.
 func (v *vqueue) IVQLen() (l int) {
 	return int(atomic.LoadUint64(&v.ic))