diff --git a/pkg/common/db/localcache/group.go b/pkg/common/db/localcache/group.go
new file mode 100644
index 000000000..a76bc6edb
--- /dev/null
+++ b/pkg/common/db/localcache/group.go
@@ -0,0 +1,36 @@
+package localcache
+
+import (
+	"Open_IM/pkg/proto/group"
+	"context"
+	"google.golang.org/grpc"
+)
+
+type GroupLocalCache struct {
+	cache map[string]GroupMemberIDsHash
+	rpc   *grpc.ClientConn
+	group group.GroupClient
+}
+
+type GroupMemberIDsHash struct {
+	memberListHash uint64
+	userIDs        []string
+}
+
+func NewGroupMemberIDsLocalCache(rpc *grpc.ClientConn) GroupLocalCache {
+	return GroupLocalCache{
+		cache: make(map[string]GroupMemberIDsHash, 0),
+		rpc:   rpc,
+		group: group.NewGroupClient(rpc),
+	}
+}
+
+func (g *GroupLocalCache) GetGroupMemberIDs(ctx context.Context, groupID string) []string {
+	_, err := g.group.GetGroupAbstractInfo(ctx, &group.GetGroupAbstractInfoReq{
+		GroupIDs: nil,
+	})
+	if err != nil {
+		return nil
+	}
+	return []string{}
+}
diff --git a/pkg/common/db/localcache/localCache.go b/pkg/common/db/localcache/localCache.go
deleted file mode 100644
index 9cfcec090..000000000
--- a/pkg/common/db/localcache/localCache.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package localcache
-
-import "google.golang.org/grpc"
-
-type GroupLocalCache struct {
-	cache map[string]GroupMemberIDsHash
-	rpc   *grpc.ClientConn
-}
-
-type GroupMemberIDsHash struct {
-	MemberListHash uint64
-	UserIDs        []string
-}
-
-func NewGroupMemberIDsLocalCache(rpc *grpc.ClientConn) GroupLocalCache {
-	return GroupLocalCache{
-		cache: make(map[string]GroupMemberIDsHash, 0),
-		rpc:   rpc,
-	}
-}
-
-func (g *GroupMemberIDsHash) GetGroupMemberIDs(groupID string) []string {
-	return []string{}
-}