diff --git a/dao/model_manage_dao.go b/dao/model_manage_dao.go
index c817d86..6480089 100644
--- a/dao/model_manage_dao.go
+++ b/dao/model_manage_dao.go
@@ -8,6 +8,7 @@ import (
 	"model-gateway/model/entity"
 
 	"gitea.redpowerfuture.com/red-future/common/db/gfdb"
+	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/util/gconv"
 )
@@ -77,6 +78,26 @@ func (d *modelManageDao) GetByCreatorAndName(ctx context.Context, creator, model
 	return
 }
 
+// CountReferences 统计引用某系统模型的引用行数（Model 链自动过滤软删）
+func (d *modelManageDao) CountReferences(ctx context.Context, systemModelId int64) (count int, err error) {
+	count, err = gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModelManage).
+		Where(entity.ModelManageCol.RefSystemModelId, systemModelId).
+		Count()
+	return
+}
+
+// UpdateReferencesName 系统模型改名时同步引用行的 model_name（保列表 DISTINCT ON 去重正确）
+func (d *modelManageDao) UpdateReferencesName(ctx context.Context, systemModelId int64, newName string) (rows int64, err error) {
+	r, err := gfdb.DB(ctx, public.DbNameModelGateway).Model(ctx, public.TableNameModelManage).
+		Data(gdb.Map{entity.ModelManageCol.ModelName: newName}).
+		Where(entity.ModelManageCol.RefSystemModelId, systemModelId).
+		Update()
+	if err != nil {
+		return
+	}
+	return r.RowsAffected()
+}
+
 func (d *modelManageDao) GetNotTenantId(ctx context.Context, req *dto.GetModelManageReq, fields ...string) (res *entity.ModelManage, err error) {
 	// 获取表前缀
 	prefix := g.Cfg().MustGet(ctx, fmt.Sprintf("database.%s.0.prefix", public.DbNameModelGateway)).String()
diff --git a/model/dto/model_manage_dto.go b/model/dto/model_manage_dto.go
index 25ec19d..5321bda 100644
--- a/model/dto/model_manage_dto.go
+++ b/model/dto/model_manage_dto.go
@@ -17,6 +17,7 @@ type CreateModelManageReq struct {
 	ModelType                    model.ModelType          `json:"modelType" v:"required#模型类型不能为空" dc:"模型类型"`
 	BaseURL                      string                   `json:"baseUrl" v:"required#模型服务地址不能为空" dc:"模型服务地址"`
 	SystemModel                  *bool                    `json:"systemModel" dc:"系统模型"`
+	RefSystemModelId             int64                    `json:"refSystemModelId" dc:"引用的系统模型ID（引用创建时填，普通创建留空）"`
 	HttpMethod                   string                   `json:"httpMethod" dc:"请求方式：GET/POST" d:"POST"`
 	ChatModel                    *bool                    `json:"chatModel" dc:"对话模型"`
 	ResponseType                 model.ResponseType       `json:"responseType" v:"required#调用模式不能为空" dc:"调用模式：0-同步 1-异步 2-流式"`
@@ -51,6 +52,7 @@ type UpdateModelManageReq struct {
 	ModelType                    model.ModelType          `json:"modelType" dc:"模型类型"`
 	BaseURL                      string                   `json:"baseUrl" dc:"模型服务地址"`
 	SystemModel                  *bool                    `json:"systemModel" dc:"系统模型"`
+	RefSystemModelId             int64                    `json:"refSystemModelId" dc:"引用的系统模型ID（引用行只改个人字段，本字段无效）"`
 	HttpMethod                   string                   `json:"httpMethod" dc:"请求方式：GET/POST"`
 	ChatModel                    *bool                    `json:"chatModel" dc:"对话模型"`
 	ResponseType                 model.ResponseType       `json:"responseType" dc:"调用模式：0-同步 1-异步 2-流式"`
@@ -152,3 +154,16 @@ type BuildSchemaMappingReq struct {
 type BuildSchemaMappingRes struct {
 	SchemaMapping map[string]any `json:"schemaMapping" dc:"生成的 Schema 映射 JSON"`
 }
+
+// ReferenceSystemModelReq 引用系统模型请求：用户只填 apiKey + 个人开关，配置实时跟随系统模型
+type ReferenceSystemModelReq struct {
+	g.Meta        `path:"/referenceSystemModel" method:"post" tags:"模型管理" summary:"引用系统模型" dc:"用户引用系统模型，只填 apiKey 等个人字段，配置实时跟随系统模型（不再全量拷贝）"`
+	SystemModelId int64  `json:"systemModelId" v:"required#系统模型ID不能为空" dc:"被引用的系统模型ID"`
+	ApiKey        string `json:"apiKey" v:"required#apiKey不能为空" dc:"调用凭证/密钥"`
+	ChatModel     *bool  `json:"chatModel" dc:"设为我的会话模型"`
+	Enabled       *bool  `json:"enabled" dc:"启用（默认启用）"`
+}
+
+type ReferenceSystemModelRes struct {
+	Id int64 `json:"id,string" dc:"引用行ID"`
+}
diff --git a/model/dto/model_manage_dto_test.go b/model/dto/model_manage_dto_test.go
new file mode 100644
index 0000000..1e73601
--- /dev/null
+++ b/model/dto/model_manage_dto_test.go
@@ -0,0 +1,24 @@
+package dto
+
+import (
+	"testing"
+
+	"model-gateway/model/entity"
+
+	"github.com/gogf/gf/v2/util/gconv"
+)
+
+// 引用行字段落地验证：DTO → entity 映射（CreateModelManageReq.RefSystemModelId → entity.RefSystemModelId）
+func TestRefSystemModelIdRoundtrip(t *testing.T) {
+	req := CreateModelManageReq{ModelName: "gpt-4o", RefSystemModelId: 100}
+	var e entity.ModelManage
+	if err := gconv.Struct(&req, &e); err != nil {
+		t.Fatalf("gconv dto->entity: %v", err)
+	}
+	if e.RefSystemModelId != 100 {
+		t.Fatalf("refSystemModelId mismatch: got %d want 100", e.RefSystemModelId)
+	}
+	if e.ModelName != "gpt-4o" {
+		t.Fatalf("modelName mismatch: got %s", e.ModelName)
+	}
+}
diff --git a/model/entity/model_manage.go b/model/entity/model_manage.go
index cdaf4ae..d0954af 100644
--- a/model/entity/model_manage.go
+++ b/model/entity/model_manage.go
@@ -13,6 +13,7 @@ type modelManageCol struct {
 	ModelType                    string
 	BaseURL                      string
 	SystemModel                  string
+	RefSystemModelId             string
 	HttpMethod                   string
 	ChatModel                    string
 	ResponseType                 string
@@ -40,6 +41,7 @@ var ModelManageCol = modelManageCol{
 	ModelType:                    "model_type",
 	BaseURL:                      "base_url",
 	SystemModel:                  "system_model",
+	RefSystemModelId:             "ref_system_model_id",
 	HttpMethod:                   "http_method",
 	ChatModel:                    "chat_model",
 	ResponseType:                 "response_type",
@@ -67,6 +69,7 @@ type ModelManage struct {
 	ModelType                    model.ModelType    `orm:"model_type" json:"modelType" description:"模型类型"`
 	BaseURL                      string             `orm:"base_url" json:"baseUrl" description:"模型地址"`
 	SystemModel                  *bool              `orm:"system_model" json:"systemModel" description:"系统模型"`
+	RefSystemModelId             int64              `orm:"ref_system_model_id" json:"refSystemModelId" description:"引用的系统模型ID（NULL=非引用行）"`
 	HttpMethod                   string             `orm:"http_method" json:"httpMethod" description:"http方法"`
 	ChatModel                    *bool              `orm:"chat_model" json:"chatModel" description:"是否聊天模型"`
 	ResponseType                 model.ResponseType `orm:"response_type" json:"responseType" description:"返回类型：1同步，2异步，3流"`
diff --git a/update.sql b/update.sql
index ad5c018..898c45b 100644
--- a/update.sql
+++ b/update.sql
@@ -317,4 +317,15 @@ COMMENT ON COLUMN model_gateway_model_task_start.media_type
 ALTER TABLE model_gateway_model_task_end
     ADD COLUMN IF NOT EXISTS total_cost NUMERIC DEFAULT 0;
 COMMENT ON COLUMN model_gateway_model_task_end.total_cost
-    IS '本次调用总费用（元），未配置计费规则为0';
\ No newline at end of file
+    IS '本次调用总费用（元），未配置计费规则为0';
+
+-- =========================
+-- 模型引用化：model_manage 新增 ref_system_model_id（引用行指向系统模型）
+-- 系统模型 = 配置唯一来源；引用行只存 apiKey/enabled/chatModel，配置列留空
+-- =========================
+ALTER TABLE model_gateway_model_manage
+    ADD COLUMN IF NOT EXISTS ref_system_model_id BIGINT DEFAULT NULL;
+COMMENT ON COLUMN model_gateway_model_manage.ref_system_model_id
+    IS '引用的系统模型ID（NULL=非引用行；system_model=false 且该列非空=引用行）';
+CREATE INDEX IF NOT EXISTS idx_model_manage_ref_system_model_id
+    ON model_gateway_model_manage(ref_system_model_id);
\ No newline at end of file