diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..16363c3
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "sources/ec-nest"]
+	path = sources/ec-nest
+	url = ssh://git@git.dianyunshouhu.com:2222/touyun_liuyun/ec-nest.git
+[submodule "sources/ec-admin"]
+	path = sources/ec-admin
+	url = ssh://git@git.dianyunshouhu.com:2222/touyun_liuyun/ec-admin.git
diff --git a/README.md b/README.md
index f5d3dc8..7cef788 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,27 @@ openspec list                # 列变更
 openspec view                # 交互式看板
 ```
 
+## 源码（Git 子模块）
+
+`sources/` 下两个独立工程以 Git 子模块方式管理：
+
+| 子模块 | 说明 | `origin`（本项目远端） | `upstream`（原仓库） |
+|---|---|---|---|
+| `sources/ec-nest` | 后端 | `touyun_liuyun/ec-nest` | `touyun_liuyun/sysmgr-nest` |
+| `sources/ec-admin` | 管理端 | `touyun_liuyun/ec-admin` | `touyun_liuyun/sysmgr-admin` |
+
+克隆仓库（含子模块）：
+
+```bash
+git clone --recurse-submodules ssh://git@git.dianyunshouhu.com:2222/touyun_liuyun/touyun-elderly-care.git
+```
+
+更新子模块到远端最新：
+
+```bash
+git submodule update --remote
+```
+
 ## 目录
 
 - `CLAUDE.md` / `AGENTS.md` — 项目规范与工作流
@@ -31,4 +52,4 @@ openspec view                # 交互式看板
 - `docs/superpowers/specs/` — 设计文档
 - `docs/superpowers/plans/` — 实施计划
 - `.claude/skills/` — 项目级技能
-- `sources/` — 源码（各端独立项目，前缀 `touyun-elderly-care-`）
+- `sources/` — 源码（Git 子模块：`ec-nest` 后端、`ec-admin` 管理端）
diff --git a/sources/ec-admin b/sources/ec-admin
new file mode 160000
index 0000000..da7a5b7
--- /dev/null
+++ b/sources/ec-admin
@@ -0,0 +1 @@
+Subproject commit da7a5b703e7c0413c6e2baf96c7e49e5db5e5871
diff --git a/sources/ec-nest b/sources/ec-nest
new file mode 160000
index 0000000..6618137
--- /dev/null
+++ b/sources/ec-nest
@@ -0,0 +1 @@
+Subproject commit 6618137da557843b0c30ebaebf06f8180a303392