diff --git a/pkg/microservice/user/core/handler/user/user.go b/pkg/microservice/user/core/handler/user/user.go
index f4652ac9cf..f02cb01c96 100644
--- a/pkg/microservice/user/core/handler/user/user.go
+++ b/pkg/microservice/user/core/handler/user/user.go
@@ -288,6 +288,7 @@ func OpenAPIListUsersBrief(c *gin.Context) {
 		Account:      args.Account,
 		Name:         args.Name,
 		Roles:        args.Roles,
+		Project:      args.Project,
 		IdentityType: args.IdentityType,
 	}
 
diff --git a/pkg/microservice/user/core/repository/orm/user.go b/pkg/microservice/user/core/repository/orm/user.go
index 633607f1d6..5ef3190e2c 100644
--- a/pkg/microservice/user/core/repository/orm/user.go
+++ b/pkg/microservice/user/core/repository/orm/user.go
@@ -117,14 +117,14 @@ func ListUsersByLoginTime(page int, perPage int, name string, order setting.List
 	return users, nil
 }
 
-// ListUsersByNameAndRole gets a list of users based on paging constraints, the name of the user, and the roles of the user
-func ListUsersByNameAndRole(page int, perPage int, name string, roles []string, db *gorm.DB) ([]models.User, error) {
+// ListUsersByNameAndRole gets a list of users based on paging constraints, the name of the user, the roles, and namespace
+func ListUsersByNameAndRole(page int, perPage int, name string, roles []string, namespace string, db *gorm.DB) ([]models.User, error) {
 	var (
 		users []models.User
 		err   error
 	)
 
-	err = db.Where("user.name LIKE ? AND role.name IN ?", "%"+name+"%", roles).
+	err = db.Where("user.name LIKE ? AND role.name IN ? AND role.namespace = ?", "%"+name+"%", roles, namespace).
 		Joins("INNER JOIN role_binding on role_binding.uid = user.uid").
 		Joins("INNER JOIN role on role_binding.role_id = role.id").Order("account ASC").Offset((page - 1) * perPage).
 		Group("user.uid").
@@ -223,15 +223,15 @@ func GetUsersCount(name string) (int64, error) {
 	return count, nil
 }
 
-// GetUsersCount gets user count
-func GetUsersCountByRoles(name string, roles []string) (int64, error) {
+// GetUsersCountByRoles gets user count filtered by roles and namespace
+func GetUsersCountByRoles(name string, roles []string, namespace string) (int64, error) {
 	var (
 		users []models.User
 		err   error
 		count int64
 	)
 
-	err = repository.DB.Where("user.name LIKE ? AND role.name IN ?", "%"+name+"%", roles).
+	err = repository.DB.Where("user.name LIKE ? AND role.name IN ? AND role.namespace = ?", "%"+name+"%", roles, namespace).
 		Joins("INNER JOIN role_binding on role_binding.uid = user.uid").
 		Joins("INNER JOIN role on role_binding.role_id = role.id").
 		Group("user.uid").
diff --git a/pkg/microservice/user/core/service/permission/user.go b/pkg/microservice/user/core/service/permission/user.go
index 7c38e179af..e24038a3f3 100644
--- a/pkg/microservice/user/core/service/permission/user.go
+++ b/pkg/microservice/user/core/service/permission/user.go
@@ -71,6 +71,7 @@ type OpenAPIQueryArgs struct {
 	IdentityType string   `json:"identity_type,omitempty" form:"identity_type"`
 	Name         string   `json:"name,omitempty" form:"name"`
 	Roles        []string `json:"roles,omitempty" form:"roles"`
+	Project      string   `json:"projectName,omitempty" form:"projectName"`
 }
 
 type QueryArgs struct {
@@ -81,6 +82,7 @@ type QueryArgs struct {
 	PerPage      int                     `json:"per_page,omitempty" form:"perPage"`
 	Page         int                     `json:"page,omitempty"  form:"page"`
 	Roles        []string                `json:"roles,omitempty" form:"roles"`
+	Project      string                  `json:"projectName,omitempty" form:"projectName"`
 	OrderBy      setting.ListUserOrderBy `json:"order_by,omitempty" form:"order_by"`
 	Order        setting.ListUserOrder   `json:"order,omitempty" form:"order"`
 }
@@ -333,6 +335,11 @@ func SearchUserByAccount(args *QueryArgs, logger *zap.SugaredLogger) (*types.Use
 }
 
 func SearchUsers(args *QueryArgs, logger *zap.SugaredLogger) (*types.UsersResp, error) {
+	namespace := args.Project
+	if namespace == "" {
+		namespace = "*"
+	}
+
 	var count int64
 	var err error
 	if len(args.Roles) == 0 {
@@ -342,7 +349,7 @@ func SearchUsers(args *QueryArgs, logger *zap.SugaredLogger) (*types.UsersResp,
 			return nil, err
 		}
 	} else {
-		count, err = orm.GetUsersCountByRoles(args.Name, args.Roles)
+		count, err = orm.GetUsersCountByRoles(args.Name, args.Roles, namespace)
 		if err != nil {
 			logger.Errorf("SeachUsers GetUsersCount By name:%s error, error msg:%s", args.Name, err.Error())
 			return nil, err
@@ -369,7 +376,7 @@ func SearchUsers(args *QueryArgs, logger *zap.SugaredLogger) (*types.UsersResp,
 			return nil, err
 		}
 	} else {
-		us, err = orm.ListUsersByNameAndRole(args.Page, args.PerPage, args.Name, args.Roles, repository.DB)
+		us, err = orm.ListUsersByNameAndRole(args.Page, args.PerPage, args.Name, args.Roles, namespace, repository.DB)
 		if err != nil {
 			logger.Errorf("SeachUsers SeachUsers By name:%s error, error msg:%s", args.Name, err.Error())
 			return nil, err