diff --git a/config/deploy-targets.yaml b/config/deploy-targets.yaml
new file mode 100644
index 0000000..f307116
--- /dev/null
+++ b/config/deploy-targets.yaml
@@ -0,0 +1,16 @@
+# 部署目标配置 — PR 合并后自动部署（集中管理）
+# 平台级能力，所有仓库的部署配置统一在这里维护
+
+targets:
+  sanguo/sanguo_moziplus_v2:
+    dev_dir: ~/.openclaw/sanguo_projects/sanguo_moziplus_v2
+    install_dir: ~/.sanguo_projects/sanguo_moziplus_v2
+    pm2_name: sanguo-moziplus-v2
+    rsync_exclude:
+      - .git/
+      - node_modules/
+      - __pycache__/
+      - data/
+    health_check: http://localhost:8083/health
+    post_deploy:
+      - pm2 restart sanguo-moziplus-v2
diff --git a/docs/design/23-toolchain-pr-lifecycle.md b/docs/design/23-toolchain-pr-lifecycle.md
index 06081c3..913bbba 100644
--- a/docs/design/23-toolchain-pr-lifecycle.md
+++ b/docs/design/23-toolchain-pr-lifecycle.md
@@ -28,7 +28,7 @@
 |---|---|---|---|---|
 | E1 | PR 更新（push 新 commit）→ 通知 reviewer | `pull_request.synchronize` | **高** | review 驳回→修改→重 review 的关键闭环 |
 | ~~E2~~ | ~~PR 合并通知~~ | ~~已删除~~ | ~~—~~ | ~~和 §22 CD 成功通知重叠，已删~~ |
-| E2 | PR 合并 → 通知 PR 作者 | `pull_request` (closed+merged) | **高** | PR #38 恢复：CD 通知语义不同（部署状态 vs 合并信息），文档 PR 无 CD 流程仍需通知 |
+| E2 | PR 合并 → 通知 PR 作者 + 自动部署 | `pull_request` (closed+merged) | **高** | PR #38 恢复：CD 通知语义不同（部署状态 vs 合并信息），文档 PR 无 CD 流程仍需通知。PR #43：含自动部署（git pull + pm2 restart） |
 | E3 | Review 评论（COMMENTED）→ 通知 PR 作者 | `pull_request_review` (COMMENTED) | 中 | reviewer 讨论提问，作者应知道 |
 | E4 | PR 上普通评论 → 通知相关人 | `issue_comment` (on PR) | 低 | 非关键路径 |
 
@@ -136,6 +136,41 @@ async def _handle_pull_request(payload: Dict[str, Any]) -> None:
 
 所以 **`_EVENT_HANDLERS` 不需要修改**，只需修改 handler 内部的 action/state 分发逻辑。
 
+### PR 合并后自动部署（PR #43）
+
+**触发**：`_handle_pr_closed` 合并事件处理完成后
+
+**逻辑**：
+1. 读取 `config/deploy-targets.yaml`，查找 `repo` 对应的部署目标
+2. 不在配置中 → 跳过（未来新项目加一条配置即可）
+3. `git pull origin main`（开发目录）
+4. `rsync` 同步到安装目录（排除项由配置指定）
+5. 判断是否需要执行 post_deploy：文件路径包含 `src/`、`templates/`、`frontend/` 或 `*.py` 后缀
+6. 纯 `docs/` 变更 → 只 pull + rsync，不执行 post_deploy
+7. 部署失败复用 `deploy_failure.md` 模板通知 `jiangwei-infra` + `pangtong-fujunshi`
+
+**配置文件**：`config/deploy-targets.yaml`（集中管理所有仓库的部署目标）
+
+```yaml
+targets:
+  sanguo/sanguo_moziplus_v2:
+    dev_dir: ~/.openclaw/sanguo_projects/sanguo_moziplus_v2
+    install_dir: ~/.sanguo_projects/sanguo_moziplus_v2
+    pm2_name: sanguo-moziplus-v2
+    rsync_exclude: [.git/, node_modules/, __pycache__/, data/]
+    health_check: http://localhost:8083/health
+    post_deploy: [pm2 restart sanguo-moziplus-v2]
+```
+
+**设计决策**：
+- **集中式 YAML 配置**（姜维建议）：部署是平台级能力，非仓库级。一个文件管所有仓库，新增项目零代码改动
+- **YAML 而非 JSON**：支持注释，方便临时禁用某个仓库或排除项
+- **post_deploy 列表**：支持任意 shell 命令，不只是 pm2 restart。未来可扩展（如 pip install -e .）
+- **health_check 字段**：预留，后续可用于部署后健康检查
+- **失败通知复用**：CD 失败和 CI 失败用同一套通知机制（deploy_failure.md 模板 + _send_mail）
+- git pull 在开发目录（有 `.git`），rsync 到安装目录
+- 全异步调用（asyncio.create_subprocess_exec）
+
 ### 不做的事
 
 | 项 | 理由 |
diff --git a/pyproject.toml b/pyproject.toml
index 34e4063..889b6a7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,6 +3,9 @@ name = "sanguo-moziplus-v2"
 version = "3.0.0"
 description = "AI Native DevOps Platform v2 - Blackboard Architecture"
 requires-python = ">=3.9"
+dependencies = [
+    "pyyaml",
+]
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
diff --git a/src/api/toolchain_routes.py b/src/api/toolchain_routes.py
index 12e4314..1c266c8 100644
--- a/src/api/toolchain_routes.py
+++ b/src/api/toolchain_routes.py
@@ -450,6 +450,18 @@ async def _handle_pr_synchronize(payload: Dict[str, Any]) -> None:
     _send_mail(reviewer, title, text)
 
 
+def _send_deploy_failure_mail(repo: str, pr_number: int, pr_title: str, reason: str) -> None:
+    """CD 部署失败通知，复用 deploy_failure 模板"""
+    text = render_template("deploy_failure", {
+        "repo": repo,
+        "commit_sha": f"PR #{pr_number}",
+    })
+    title = f"部署失败: {repo} (auto-deploy, PR #{pr_number})"
+    full_text = f"{text}\n\n失败原因: {reason}"
+    for agent_id in ("jiangwei-infra", "pangtong-fujunshi"):
+        _send_mail(agent_id, title, full_text)
+
+
 async def _handle_pr_closed(payload: Dict[str, Any]) -> None:
     """PR closed → 如果 merged，通知 PR 作者。"""
     pr = payload.get("pull_request")
@@ -481,6 +493,94 @@ async def _handle_pr_closed(payload: Dict[str, Any]) -> None:
     title = f"PR 已合并: {pr_title} ({repo}#{pr_number})"
     _send_mail(pr_author, title, text)
 
+    # 自动部署：git pull + rsync + 按需 post_deploy
+    try:
+        import yaml
+
+        # 加载部署配置
+        config_path = Path(__file__).parent.parent.parent / "config" / "deploy-targets.yaml"
+        if not config_path.exists():
+            return
+
+        with open(config_path, "r", encoding="utf-8") as f:
+            deploy_config = yaml.safe_load(f) or {}
+
+        targets = deploy_config.get("targets", {})
+        target = targets.get(repo)
+        if not target:
+            return  # 该仓库不在部署配置中，跳过
+
+        dev_dir = os.path.expanduser(target["dev_dir"])
+        install_dir = os.path.expanduser(target.get("install_dir", target["dev_dir"]))
+        rsync_excludes = target.get("rsync_exclude", [])
+
+        # Step 1: git pull in dev dir
+        proc = await asyncio.create_subprocess_exec(
+            "git", "pull", "origin", "main",
+            cwd=dev_dir,
+            stdout=asyncio.subprocess.PIPE,
+            stderr=asyncio.subprocess.PIPE,
+        )
+        stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=30)
+
+        if proc.returncode != 0:
+            logger.warning("Auto-deploy: git pull failed for %s: %s", repo, stderr.decode())
+            return
+
+        logger.info("Auto-deploy: git pull success for %s", repo)
+
+        # Step 2: rsync to install dir
+        rsync_args = ["rsync", "-a"]
+        for exc in rsync_excludes:
+            rsync_args.extend(["--exclude", exc])
+        rsync_args.extend([f"{dev_dir}/", f"{install_dir}/"])
+
+        rsync_proc = await asyncio.create_subprocess_exec(
+            *rsync_args,
+            stdout=asyncio.subprocess.PIPE,
+            stderr=asyncio.subprocess.PIPE,
+        )
+        _, rsync_err = await asyncio.wait_for(rsync_proc.communicate(), timeout=60)
+
+        if rsync_proc.returncode != 0:
+            logger.error("Auto-deploy: rsync failed: %s", rsync_err.decode())
+            _send_deploy_failure_mail(repo, pr_number, pr_title, f"rsync 失败: {rsync_err.decode()}")
+            return
+
+        # Step 3: 判断是否需要执行 post_deploy
+        files = await _fetch_pr_files(repo, pr_number)
+        file_list = files[0]
+        needs_restart = any(
+            f.startswith("src/") or f.startswith("templates/") or f.startswith("frontend/") or f.endswith(".py")
+            for f in file_list
+        )
+
+        if needs_restart:
+            post_deploy_cmds = target.get("post_deploy", [])
+            for cmd in post_deploy_cmds:
+                logger.info("Auto-deploy: executing post_deploy: %s", cmd)
+                deploy_proc = await asyncio.create_subprocess_exec(
+                    "sh", "-c", cmd,
+                    stdout=asyncio.subprocess.PIPE,
+                    stderr=asyncio.subprocess.PIPE,
+                )
+                _, deploy_err = await asyncio.wait_for(deploy_proc.communicate(), timeout=30)
+
+                if deploy_proc.returncode != 0:
+                    logger.error("Auto-deploy: post_deploy failed: %s", deploy_err.decode())
+                    _send_deploy_failure_mail(repo, pr_number, pr_title, f"post_deploy 失败 ({cmd}): {deploy_err.decode()}")
+                    break
+            else:
+                logger.info("Auto-deploy: all post_deploy commands succeeded (files: %s)", ", ".join(file_list[:5]))
+        else:
+            logger.info("Auto-deploy: docs-only change for %s, skip post_deploy", repo)
+
+    except asyncio.TimeoutError:
+        logger.error("Auto-deploy: timeout for %s", repo)
+        _send_deploy_failure_mail(repo, pr_number, pr_title, "部署超时")
+    except Exception as e:
+        logger.error("Auto-deploy: unexpected error: %s", e)
+
 
 async def _handle_issues(payload: Dict[str, Any]) -> None:
     """处理 issues 事件：assigned → 通知被指派人；opened+部署失败 → 通知运维。"""