diff --git a/internal/proxy/privilege_interceptor.go b/internal/proxy/privilege_interceptor.go
index 645d41dd90..a25aa392f0 100644
--- a/internal/proxy/privilege_interceptor.go
+++ b/internal/proxy/privilege_interceptor.go
@@ -41,7 +41,7 @@ p = sub, obj, act
 e = some(where (p.eft == allow))
 
 [matchers]
-m = r.sub == p.sub && globMatch(r.obj, p.obj) && globMatch(r.act, p.act) || r.sub == "admin" || (r.sub == p.sub && dbMatch(r.obj, p.obj) && privilegeGroupContains(r.act, p.act))
+m = r.sub == p.sub && globMatch(r.obj, p.obj) && globMatch(r.act, p.act) || r.sub == "admin" || (r.sub == p.sub && dbMatch(r.obj, p.obj) && privilegeGroupContains(r.act, p.act, r.obj, p.obj))
 `
 )
 
@@ -248,20 +248,38 @@ func DBMatchFunc(args ...interface{}) (interface{}, error) {
 	return db1 == db2, nil
 }
 
+func collMatch(requestObj, policyObj string) bool {
+	_, coll1 := funcutil.SplitObjectName(requestObj[strings.Index(requestObj, "-")+1:])
+	_, coll2 := funcutil.SplitObjectName(policyObj[strings.Index(policyObj, "-")+1:])
+
+	return coll2 == util.AnyWord || coll1 == coll2
+}
+
 func PrivilegeGroupContains(args ...interface{}) (interface{}, error) {
 	requestPrivilege := args[0].(string)
 	policyPrivilege := args[1].(string)
+	requestObj := args[2].(string)
+	policyObj := args[3].(string)
 
 	switch policyPrivilege {
 	case commonpb.ObjectPrivilege_PrivilegeAll.String():
 		return true, nil
 	case commonpb.ObjectPrivilege_PrivilegeGroupReadOnly.String():
+		// read only belong to collection object
+		if !collMatch(requestObj, policyObj) {
+			return false, nil
+		}
 		_, ok := roPrivileges[requestPrivilege]
 		return ok, nil
 	case commonpb.ObjectPrivilege_PrivilegeGroupReadWrite.String():
+		// read write belong to collection object
+		if !collMatch(requestObj, policyObj) {
+			return false, nil
+		}
 		_, ok := rwPrivileges[requestPrivilege]
 		return ok, nil
 	case commonpb.ObjectPrivilege_PrivilegeGroupAdmin.String():
+		// admin belong to global object
 		_, ok := adminPrivileges[requestPrivilege]
 		return ok, nil
 	default:
diff --git a/internal/proxy/privilege_interceptor_test.go b/internal/proxy/privilege_interceptor_test.go
index c7b52a1e36..785fc53191 100644
--- a/internal/proxy/privilege_interceptor_test.go
+++ b/internal/proxy/privilege_interceptor_test.go
@@ -235,8 +235,9 @@ func TestResourceGroupPrivilege(t *testing.T) {
 func TestPrivilegeGroup(t *testing.T) {
 	ctx := context.Background()
 
-	t.Run("Read Only", func(t *testing.T) {
+	t.Run("grant ReadOnly to single collection", func(t *testing.T) {
 		paramtable.Get().Save(Params.CommonCfg.AuthorizationEnabled.Key, "true")
+		initPrivilegeGroups()
 
 		var err error
 		ctx = GetContext(context.Background(), "fooo:123456")
@@ -248,7 +249,7 @@ func TestPrivilegeGroup(t *testing.T) {
 			return &internalpb.ListPolicyResponse{
 				Status: merr.Success(),
 				PolicyInfos: []string{
-					funcutil.PolicyForPrivilege("role1", commonpb.ObjectType_Global.String(), "*", commonpb.ObjectPrivilege_PrivilegeGroupReadOnly.String(), "default"),
+					funcutil.PolicyForPrivilege("role1", commonpb.ObjectType_Collection.String(), "coll1", commonpb.ObjectPrivilege_PrivilegeGroupReadOnly.String(), "default"),
 				},
 				UserRoles: []string{
 					funcutil.EncodeUserRoleCache("fooo", "role1"),
@@ -258,18 +259,169 @@ func TestPrivilegeGroup(t *testing.T) {
 		InitMetaCache(ctx, client, queryCoord, mgr)
 		defer CleanPrivilegeCache()
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll1",
+		})
 		assert.NoError(t, err)
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll1",
+		})
 		assert.NoError(t, err)
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll1",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.ShowCollectionsRequest{})
+		assert.NoError(t, err)
+	})
+
+	t.Run("grant ReadOnly to all collection", func(t *testing.T) {
+		paramtable.Get().Save(Params.CommonCfg.AuthorizationEnabled.Key, "true")
+		initPrivilegeGroups()
+
+		var err error
+		ctx = GetContext(context.Background(), "fooo:123456")
+		client := &MockRootCoordClientInterface{}
+		queryCoord := &mocks.MockQueryCoordClient{}
+		mgr := newShardClientMgr()
+
+		client.listPolicy = func(ctx context.Context, in *internalpb.ListPolicyRequest) (*internalpb.ListPolicyResponse, error) {
+			return &internalpb.ListPolicyResponse{
+				Status: merr.Success(),
+				PolicyInfos: []string{
+					funcutil.PolicyForPrivilege("role1", commonpb.ObjectType_Collection.String(), "*", commonpb.ObjectPrivilege_PrivilegeGroupReadOnly.String(), "default"),
+				},
+				UserRoles: []string{
+					funcutil.EncodeUserRoleCache("fooo", "role1"),
+				},
+			}, nil
+		}
+		InitMetaCache(ctx, client, queryCoord, mgr)
+		defer CleanPrivilegeCache()
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll1",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll2",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll2",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.ShowCollectionsRequest{})
+		assert.NoError(t, err)
+	})
+
+	t.Run("grant ReadWrite to single collection", func(t *testing.T) {
+		paramtable.Get().Save(Params.CommonCfg.AuthorizationEnabled.Key, "true")
+		initPrivilegeGroups()
+
+		var err error
+		ctx = GetContext(context.Background(), "fooo:123456")
+		client := &MockRootCoordClientInterface{}
+		queryCoord := &mocks.MockQueryCoordClient{}
+		mgr := newShardClientMgr()
+
+		client.listPolicy = func(ctx context.Context, in *internalpb.ListPolicyRequest) (*internalpb.ListPolicyResponse, error) {
+			return &internalpb.ListPolicyResponse{
+				Status: merr.Success(),
+				PolicyInfos: []string{
+					funcutil.PolicyForPrivilege("role1", commonpb.ObjectType_Collection.String(), "coll1", commonpb.ObjectPrivilege_PrivilegeGroupReadWrite.String(), "default"),
+				},
+				UserRoles: []string{
+					funcutil.EncodeUserRoleCache("fooo", "role1"),
+				},
+			}, nil
+		}
+		InitMetaCache(ctx, client, queryCoord, mgr)
+		defer CleanPrivilegeCache()
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.DeleteRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.DeleteRequest{
+			CollectionName: "coll2",
+		})
+		assert.Error(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.CreateResourceGroupRequest{})
 		assert.Error(t, err)
 	})
 
-	t.Run("Read Write", func(t *testing.T) {
+	t.Run("grant ReadWrite to all collection", func(t *testing.T) {
 		paramtable.Get().Save(Params.CommonCfg.AuthorizationEnabled.Key, "true")
+		initPrivilegeGroups()
 
 		var err error
 		ctx = GetContext(context.Background(), "fooo:123456")
@@ -281,7 +433,7 @@ func TestPrivilegeGroup(t *testing.T) {
 			return &internalpb.ListPolicyResponse{
 				Status: merr.Success(),
 				PolicyInfos: []string{
-					funcutil.PolicyForPrivilege("role1", commonpb.ObjectType_Global.String(), "*", commonpb.ObjectPrivilege_PrivilegeGroupReadWrite.String(), "default"),
+					funcutil.PolicyForPrivilege("role1", commonpb.ObjectType_Collection.String(), "*", commonpb.ObjectPrivilege_PrivilegeGroupReadWrite.String(), "default"),
 				},
 				UserRoles: []string{
 					funcutil.EncodeUserRoleCache("fooo", "role1"),
@@ -291,16 +443,44 @@ func TestPrivilegeGroup(t *testing.T) {
 		InitMetaCache(ctx, client, queryCoord, mgr)
 		defer CleanPrivilegeCache()
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll1",
+		})
 		assert.NoError(t, err)
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll1",
+		})
 		assert.NoError(t, err)
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll1",
+		})
 		assert.NoError(t, err)
 
-		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.DeleteRequest{})
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.DeleteRequest{
+			CollectionName: "coll1",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.QueryRequest{
+			CollectionName: "coll2",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.SearchRequest{
+			CollectionName: "coll2",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.InsertRequest{
+			CollectionName: "coll2",
+		})
+		assert.NoError(t, err)
+
+		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.DeleteRequest{
+			CollectionName: "coll2",
+		})
 		assert.NoError(t, err)
 
 		_, err = PrivilegeInterceptor(GetContext(context.Background(), "fooo:123456"), &milvuspb.CreateResourceGroupRequest{})
@@ -309,6 +489,7 @@ func TestPrivilegeGroup(t *testing.T) {
 
 	t.Run("Admin", func(t *testing.T) {
 		paramtable.Get().Save(Params.CommonCfg.AuthorizationEnabled.Key, "true")
+		initPrivilegeGroups()
 
 		var err error
 		ctx = GetContext(context.Background(), "fooo:123456")
diff --git a/internal/rootcoord/root_coord.go b/internal/rootcoord/root_coord.go
index d75ba5e23a..7484b195a8 100644
--- a/internal/rootcoord/root_coord.go
+++ b/internal/rootcoord/root_coord.go
@@ -2524,7 +2524,7 @@ func (c *Core) isValidGrantor(entity *milvuspb.GrantorEntity, object string) err
 			return nil
 		}
 	}
-	return fmt.Errorf("not found the privilege name[%s]", entity.Privilege.Name)
+	return fmt.Errorf("not found the privilege name[%s] in object[%s]", entity.Privilege.Name, object)
 }
 
 // OperatePrivilege operate the privilege, including grant and revoke
diff --git a/pkg/util/constant.go b/pkg/util/constant.go
index 3aec9b9287..4fae9f09a3 100644
--- a/pkg/util/constant.go
+++ b/pkg/util/constant.go
@@ -57,8 +57,9 @@ const (
 	NonDBID             = int64(0)
 	InvalidDBID         = int64(-1)
 
-	PrivilegeWord = "Privilege"
-	AnyWord       = "*"
+	PrivilegeWord      = "Privilege"
+	PrivilegeGroupWord = "PrivilegeGroup"
+	AnyWord            = "*"
 
 	IdentifierKey = "identifier"
 
@@ -110,6 +111,8 @@ var (
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeShowPartitions.String()),
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeHasPartition.String()),
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeGetFlushState.String()),
+			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeGroupReadOnly.String()),
+			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeGroupReadWrite.String()),
 		},
 		commonpb.ObjectType_Global.String(): {
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeAll.String()),
@@ -146,6 +149,7 @@ var (
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeDropAlias.String()),
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeDescribeAlias.String()),
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeListAliases.String()),
+			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeGroupAdmin.String()),
 		},
 		commonpb.ObjectType_User.String(): {
 			MetaStore2API(commonpb.ObjectPrivilege_PrivilegeUpdateUser.String()),
@@ -198,8 +202,6 @@ var (
 		commonpb.ObjectPrivilege_PrivilegeGetStatistics.String(),
 		commonpb.ObjectPrivilege_PrivilegeCreateIndex.String(),
 		commonpb.ObjectPrivilege_PrivilegeDropIndex.String(),
-		commonpb.ObjectPrivilege_PrivilegeCreateCollection.String(),
-		commonpb.ObjectPrivilege_PrivilegeDropCollection.String(),
 		commonpb.ObjectPrivilege_PrivilegeCreatePartition.String(),
 		commonpb.ObjectPrivilege_PrivilegeDropPartition.String(),
 		commonpb.ObjectPrivilege_PrivilegeLoad.String(),
@@ -216,6 +218,8 @@ var (
 		commonpb.ObjectPrivilege_PrivilegeDropAlias.String(),
 	}
 	AdminPrivilegeGroup = []string{
+		commonpb.ObjectPrivilege_PrivilegeCreateCollection.String(),
+		commonpb.ObjectPrivilege_PrivilegeDropCollection.String(),
 		commonpb.ObjectPrivilege_PrivilegeQuery.String(),
 		commonpb.ObjectPrivilege_PrivilegeSearch.String(),
 		commonpb.ObjectPrivilege_PrivilegeIndexDetail.String(),
@@ -291,7 +295,11 @@ func StringList(stringMap map[string]struct{}) []string {
 // MetaStore2API convert meta-store's privilege name to api's
 // example: PrivilegeAll -> All
 func MetaStore2API(name string) string {
-	return name[strings.Index(name, PrivilegeWord)+len(PrivilegeWord):]
+	prefix := PrivilegeWord
+	if strings.Contains(name, PrivilegeGroupWord) {
+		prefix = PrivilegeGroupWord
+	}
+	return name[strings.Index(name, prefix)+len(prefix):]
 }
 
 func PrivilegeNameForAPI(name string) string {
@@ -303,10 +311,17 @@ func PrivilegeNameForAPI(name string) string {
 }
 
 func PrivilegeNameForMetastore(name string) string {
+	// check if name is single privilege
 	dbPrivilege := PrivilegeWord + name
 	_, ok := commonpb.ObjectPrivilege_value[dbPrivilege]
 	if !ok {
-		return ""
+		// check if name is privilege group
+		dbPrivilege := PrivilegeGroupWord + name
+		_, ok := commonpb.ObjectPrivilege_value[dbPrivilege]
+		if !ok {
+			return ""
+		}
+		return dbPrivilege
 	}
 	return dbPrivilege
 }
diff --git a/tests/integration/rbac/privilege_group_test.go b/tests/integration/rbac/privilege_group_test.go
new file mode 100644
index 0000000000..11a574911a
--- /dev/null
+++ b/tests/integration/rbac/privilege_group_test.go
@@ -0,0 +1,137 @@
+// Licensed to the LF AI & Data foundation under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package rbac
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+
+	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
+	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+	"github.com/milvus-io/milvus/pkg/util"
+	"github.com/milvus-io/milvus/pkg/util/merr"
+	"github.com/milvus-io/milvus/pkg/util/paramtable"
+	"github.com/milvus-io/milvus/tests/integration"
+)
+
+type PrivilegeGroupTestSuite struct {
+	integration.MiniClusterSuite
+}
+
+func (s *PrivilegeGroupTestSuite) SetupSuite() {
+	paramtable.Init()
+	paramtable.Get().Save(paramtable.Get().QueryCoordCfg.BalanceCheckInterval.Key, "1000")
+	paramtable.Get().Save(paramtable.Get().QueryNodeCfg.GracefulStopTimeout.Key, "1")
+	paramtable.Get().Save(paramtable.Get().CommonCfg.AuthorizationEnabled.Key, "true")
+
+	s.Require().NoError(s.SetupEmbedEtcd())
+}
+
+func (s *PrivilegeGroupTestSuite) TestPrivilegeGroup() {
+	ctx := GetContext(context.Background(), "root:123456")
+	// test empty rbac content
+	resp, err := s.Cluster.Proxy.BackupRBAC(ctx, &milvuspb.BackupRBACMetaRequest{})
+	s.NoError(err)
+	s.True(merr.Ok(resp.GetStatus()))
+	s.Equal("", resp.GetRBACMeta().String())
+
+	// generate some rbac content
+	roleName := "test_role"
+	resp1, err := s.Cluster.Proxy.CreateRole(ctx, &milvuspb.CreateRoleRequest{
+		Entity: &milvuspb.RoleEntity{
+			Name: roleName,
+		},
+	})
+	s.NoError(err)
+	s.True(merr.Ok(resp1))
+	resp2, err := s.Cluster.Proxy.OperatePrivilege(ctx, &milvuspb.OperatePrivilegeRequest{
+		Type: milvuspb.OperatePrivilegeType_Grant,
+		Entity: &milvuspb.GrantEntity{
+			Role:       &milvuspb.RoleEntity{Name: roleName},
+			Object:     &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Collection.String()},
+			ObjectName: util.AnyWord,
+			DbName:     util.AnyWord,
+			Grantor: &milvuspb.GrantorEntity{
+				User:      &milvuspb.UserEntity{Name: util.UserRoot},
+				Privilege: &milvuspb.PrivilegeEntity{Name: "ReadOnly"},
+			},
+		},
+	})
+	s.NoError(err)
+	s.True(merr.Ok(resp2))
+
+	resp3, err := s.Cluster.Proxy.OperatePrivilege(ctx, &milvuspb.OperatePrivilegeRequest{
+		Type: milvuspb.OperatePrivilegeType_Grant,
+		Entity: &milvuspb.GrantEntity{
+			Role:       &milvuspb.RoleEntity{Name: roleName},
+			Object:     &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Collection.String()},
+			ObjectName: util.AnyWord,
+			DbName:     util.AnyWord,
+			Grantor: &milvuspb.GrantorEntity{
+				User:      &milvuspb.UserEntity{Name: util.UserRoot},
+				Privilege: &milvuspb.PrivilegeEntity{Name: "ReadWrite"},
+			},
+		},
+	})
+	s.NoError(err)
+	s.True(merr.Ok(resp3))
+
+	resp4, err := s.Cluster.Proxy.OperatePrivilege(ctx, &milvuspb.OperatePrivilegeRequest{
+		Type: milvuspb.OperatePrivilegeType_Grant,
+		Entity: &milvuspb.GrantEntity{
+			Role:       &milvuspb.RoleEntity{Name: roleName},
+			Object:     &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Global.String()},
+			ObjectName: util.AnyWord,
+			DbName:     util.AnyWord,
+			Grantor: &milvuspb.GrantorEntity{
+				User:      &milvuspb.UserEntity{Name: util.UserRoot},
+				Privilege: &milvuspb.PrivilegeEntity{Name: "Admin"},
+			},
+		},
+	})
+	s.NoError(err)
+	s.True(merr.Ok(resp4))
+
+	resp5, err := s.Cluster.Proxy.SelectGrant(ctx, &milvuspb.SelectGrantRequest{
+		Entity: &milvuspb.GrantEntity{
+			Role:       &milvuspb.RoleEntity{Name: roleName},
+			Object:     &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Global.String()},
+			ObjectName: util.AnyWord,
+			DbName:     util.AnyWord,
+		},
+	})
+	s.NoError(err)
+	s.True(merr.Ok(resp5.GetStatus()))
+	s.Len(resp5.GetEntities(), 1)
+
+	resp6, err := s.Cluster.Proxy.SelectGrant(ctx, &milvuspb.SelectGrantRequest{
+		Entity: &milvuspb.GrantEntity{
+			Role:       &milvuspb.RoleEntity{Name: roleName},
+			Object:     &milvuspb.ObjectEntity{Name: commonpb.ObjectType_Collection.String()},
+			ObjectName: util.AnyWord,
+			DbName:     util.AnyWord,
+		},
+	})
+	s.NoError(err)
+	s.True(merr.Ok(resp6.GetStatus()))
+	s.Len(resp6.GetEntities(), 2)
+}
+
+func TestPrivilegeGroup(t *testing.T) {
+	suite.Run(t, new(PrivilegeGroupTestSuite))
+}