diff --git a/internal/rootcoord/root_coord.go b/internal/rootcoord/root_coord.go
index cc330fa3c9..4e8fc35ee1 100644
--- a/internal/rootcoord/root_coord.go
+++ b/internal/rootcoord/root_coord.go
@@ -545,15 +545,29 @@ func (c *Core) initRbac() error {
 		}
 	}
 
+	if Params.ProxyCfg.EnablePublicPrivilege.GetAsBool() {
+		err = c.initPublicRolePrivilege()
+		if err != nil {
+			return err
+		}
+	}
+
+	if Params.RoleCfg.Enabled.GetAsBool() {
+		return c.initBuiltinRoles()
+	}
+	return nil
+}
+
+func (c *Core) initPublicRolePrivilege() error {
 	// grant privileges for the public role
 	globalPrivileges := []string{
 		commonpb.ObjectPrivilege_PrivilegeDescribeCollection.String(),
-		commonpb.ObjectPrivilege_PrivilegeShowCollections.String(),
 	}
 	collectionPrivileges := []string{
 		commonpb.ObjectPrivilege_PrivilegeIndexDetail.String(),
 	}
 
+	var err error
 	for _, globalPrivilege := range globalPrivileges {
 		err = c.meta.OperatePrivilege(util.DefaultTenant, &milvuspb.GrantEntity{
 			Role:       &milvuspb.RoleEntity{Name: util.RolePublic},
@@ -584,9 +598,6 @@ func (c *Core) initRbac() error {
 			return errors.Wrap(err, "failed to grant collection privilege")
 		}
 	}
-	if Params.RoleCfg.Enabled.GetAsBool() {
-		return c.initBuiltinRoles()
-	}
 	return nil
 }
 
diff --git a/internal/rootcoord/root_coord_test.go b/internal/rootcoord/root_coord_test.go
index 832526d61b..bbdb896b52 100644
--- a/internal/rootcoord/root_coord_test.go
+++ b/internal/rootcoord/root_coord_test.go
@@ -1807,6 +1807,48 @@ func TestCore_Stop(t *testing.T) {
 	})
 }
 
+func TestCore_InitRBAC(t *testing.T) {
+	paramtable.Init()
+	t.Run("init default role and public role privilege", func(t *testing.T) {
+		meta := mockrootcoord.NewIMetaTable(t)
+		c := newTestCore(withHealthyCode(), withMeta(meta))
+		meta.EXPECT().CreateRole(mock.Anything, mock.Anything).Return(nil).Twice()
+		meta.EXPECT().OperatePrivilege(mock.Anything, mock.Anything, mock.Anything).Return(nil).Twice()
+
+		Params.Save(Params.RoleCfg.Enabled.Key, "false")
+		Params.Save(Params.ProxyCfg.EnablePublicPrivilege.Key, "true")
+
+		defer func() {
+			Params.Reset(Params.RoleCfg.Enabled.Key)
+			Params.Reset(Params.ProxyCfg.EnablePublicPrivilege.Key)
+		}()
+
+		err := c.initRbac()
+		assert.NoError(t, err)
+	})
+
+	t.Run("not init public role privilege and init default privilege", func(t *testing.T) {
+		builtinRoles := `{"db_admin": {"privileges": [{"object_type": "Global", "object_name": "*", "privilege": "CreateCollection", "db_name": "*"}]}}`
+		meta := mockrootcoord.NewIMetaTable(t)
+		c := newTestCore(withHealthyCode(), withMeta(meta))
+		meta.EXPECT().CreateRole(mock.Anything, mock.Anything).Return(nil).Times(3)
+		meta.EXPECT().OperatePrivilege(mock.Anything, mock.Anything, mock.Anything).Return(nil).Once()
+
+		Params.Save(Params.RoleCfg.Enabled.Key, "true")
+		Params.Save(Params.RoleCfg.Roles.Key, builtinRoles)
+		Params.Save(Params.ProxyCfg.EnablePublicPrivilege.Key, "false")
+
+		defer func() {
+			Params.Reset(Params.RoleCfg.Enabled.Key)
+			Params.Reset(Params.RoleCfg.Roles.Key)
+			Params.Reset(Params.ProxyCfg.EnablePublicPrivilege.Key)
+		}()
+
+		err := c.initRbac()
+		assert.NoError(t, err)
+	})
+}
+
 type RootCoordSuite struct {
 	suite.Suite
 }
diff --git a/pkg/util/paramtable/component_param.go b/pkg/util/paramtable/component_param.go
index 117757815a..8804240da4 100644
--- a/pkg/util/paramtable/component_param.go
+++ b/pkg/util/paramtable/component_param.go
@@ -1034,6 +1034,7 @@ type proxyConfig struct {
 	MustUsePartitionKey          ParamItem `refreshable:"true"`
 	SkipAutoIDCheck              ParamItem `refreshable:"true"`
 	SkipPartitionKeyCheck        ParamItem `refreshable:"true"`
+	EnablePublicPrivilege        ParamItem `refreshable:"false"`
 
 	AccessLog AccessLogConfig
 
@@ -1394,6 +1395,14 @@ please adjust in embedded Milvus: false`,
 	}
 	p.SkipPartitionKeyCheck.Init(base.mgr)
 
+	p.EnablePublicPrivilege = ParamItem{
+		Key:          "proxy.enablePublicPrivilege",
+		Version:      "2.4.1",
+		DefaultValue: "true",
+		Doc:          "switch for whether proxy shall enable public privilege",
+	}
+	p.EnablePublicPrivilege.Init(base.mgr)
+
 	p.GracefulStopTimeout = ParamItem{
 		Key:          "proxy.gracefulStopTimeout",
 		Version:      "2.3.7",