diff --git a/ai_engines/openai_engine.py b/ai_engines/openai_engine.py
index 3bf8723..7867aac 100644
--- a/ai_engines/openai_engine.py
+++ b/ai_engines/openai_engine.py
@@ -19,6 +19,11 @@ except Exception:
     def get_system_config(key, default=None):
         return default
 
+try:
+    from xcli_core import model_registry
+except Exception:
+    model_registry = None
+
 try:
     from xcli_core.verbose import vprint
 except Exception:
@@ -140,6 +145,9 @@ OpenAI 兼容格式引擎帮助信息
         self.conversation_history = []
         self.shared_conversation_history = None
 
+        # 应用注册表中的当前模型（覆盖扁平默认配置，向后兼容）
+        self._apply_registry_model()
+
         # 最近一次请求的 token 用量（供 token 感知压缩使用）
         self.last_prompt_tokens = None
 
@@ -155,6 +163,63 @@ OpenAI 兼容格式引擎帮助信息
         else:
             vprint(f"{Fore.GREEN}OpenAI 兼容引擎已启用 (base_url: {self.base_url}){Style.RESET_ALL}")
 
+    # ── 模型注册表（多模型在线切换）──
+
+    def _apply_registry_model(self):
+        """若注册表存在 current 模型，用它覆盖 __init__ 读到的扁平默认配置。"""
+        if not model_registry:
+            return
+        try:
+            m = model_registry.get_model()
+            if m:
+                self.api_key = m.get("api_key", self.api_key)
+                self.base_url = (m.get("base_url") or self.base_url).rstrip('/')
+                self.model = m.get("model", self.model)
+        except Exception:
+            pass
+
+    def list_registry_models(self):
+        """返回 (models, current_name)，供 CLI 列出已配置模型。"""
+        if not model_registry:
+            return [], None
+        return model_registry.list_models()
+
+    def current_model_name(self):
+        """当前激活模型在注册表中的名称（兼容单槽位时返回 model 值）。"""
+        if not model_registry:
+            return self.model
+        try:
+            models, current = model_registry.list_models()
+            return current or self.model
+        except Exception:
+            return self.model
+
+    def set_registry_model(self, name):
+        """切换到注册表中指定模型（含 base_url/api_key/model）并持久化 current。
+        成功返回 True。"""
+        if not model_registry:
+            return False
+        m = model_registry.get_model(name)
+        if not m:
+            return False
+        self.api_key = m.get("api_key", "")
+        self.base_url = (m.get("base_url") or "").rstrip('/')
+        self.model = m.get("model", "")
+        model_registry.set_current(name)
+        return True
+
+    def add_model(self, entry):
+        """新增/更新模型并持久化。entry: {name, base_url, api_key, model}。"""
+        if not model_registry:
+            return None
+        return model_registry.add_model(entry)
+
+    def remove_model(self, name):
+        """删除模型并持久化。成功返回 True。"""
+        if not model_registry:
+            return False
+        return model_registry.remove_model(name)
+
     def _get_headers(self):
         """构建请求头"""
         headers = {
diff --git a/tests/test_model_registry.py b/tests/test_model_registry.py
new file mode 100644
index 0000000..d217e9e
--- /dev/null
+++ b/tests/test_model_registry.py
@@ -0,0 +1,188 @@
+"""模型注册表 + /model 命令的回归测试。
+
+不污染真实 config.json：所有读写都指向临时文件。
+"""
+import os
+import json
+import tempfile
+
+import pytest
+
+from xcli_core import model_registry as mr
+import xcli_core.config as cfgmod
+import ai_engines.openai_engine as oe_mod
+
+
+@pytest.fixture
+def tmp_config():
+    """准备临时 config.json，并把注册表与 openai 引擎的读取都重定向过去。"""
+    d = tempfile.mkdtemp()
+    path = os.path.join(d, "config.json")
+    payload = {
+        "api": {"engines": {
+            "openai": {"api_key": "K0", "base_url": "https://old/v1", "model": "old-model"}
+        }},
+        "system": {},
+    }
+    with open(path, "w", encoding="utf-8") as f:
+        json.dump(payload, f, ensure_ascii=False, indent=2)
+
+    saved_path = mr._CONFIG_PATH
+    saved_proj = oe_mod.project_root
+    mr._set_config_path(path)
+    oe_mod.project_root = d
+    try:
+        yield path
+    finally:
+        mr._set_config_path(saved_path)
+        oe_mod.project_root = saved_proj
+
+
+# ── 注册表单元 ──
+
+def test_legacy_flat_config_is_single_implicit_model(tmp_config):
+    models, current = mr.list_models()
+    assert len(models) == 1
+    assert models[0]["model"] == "old-model"
+    assert current == "old-model"
+
+
+def test_add_first_model_migrates_flat_and_keeps_current(tmp_config):
+    mr.add_model({"name": "gpt4o", "base_url": "https://api.openai.com/v1",
+                  "api_key": "sk", "model": "gpt-4o"})
+    models, current = mr.list_models()
+    names = [m["name"] for m in models]
+    assert names == ["old-model", "gpt4o"]
+    # current 不应跳变到新加的模型
+    assert current == "old-model"
+
+
+def test_add_duplicate_name_updates_in_place(tmp_config):
+    mr.add_model({"name": "gpt4o", "base_url": "u1", "api_key": "k1", "model": "gpt-4o"})
+    mr.add_model({"name": "gpt4o", "base_url": "u2", "api_key": "k2", "model": "gpt-4o-mini"})
+    models, _ = mr.list_models()
+    assert len(models) == 2  # 未重复追加
+    assert models[1]["base_url"] == "u2"
+
+
+def test_set_current_and_get_model(tmp_config):
+    mr.add_model({"name": "gpt4o", "base_url": "https://api.openai.com/v1",
+                  "api_key": "sk", "model": "gpt-4o"})
+    assert mr.set_current("gpt4o") is True
+    m = mr.get_model()
+    assert m["model"] == "gpt-4o"
+    assert mr.set_current("ghost") is False  # 越权返回 False
+
+
+def test_remove_current_falls_back_to_first(tmp_config):
+    mr.add_model({"name": "gpt4o", "base_url": "u", "api_key": "k", "model": "gpt-4o"})
+    mr.set_current("gpt4o")
+    assert mr.remove_model("gpt4o") is True
+    _, current = mr.list_models()
+    assert current == "old-model"
+
+
+def test_remove_missing_returns_false(tmp_config):
+    assert mr.remove_model("nope") is False
+
+
+def test_persisted_to_disk(tmp_config):
+    mr.add_model({"name": "gpt4o", "base_url": "u", "api_key": "k", "model": "gpt-4o"})
+    mr.set_current("gpt4o")
+    with open(tmp_config, "r", encoding="utf-8") as f:
+        saved = json.load(f)
+    block = saved["api"]["engines"]["openai"]
+    assert block["current"] == "gpt4o"
+    assert any(m["name"] == "gpt4o" for m in block["models"])
+
+
+# ── 引擎接入 ──
+
+def test_engine_init_applies_registry_current(tmp_config):
+    mr.add_model({"name": "gpt4o", "base_url": "https://api.openai.com/v1",
+                  "api_key": "sk", "model": "gpt-4o"})
+    mr.set_current("gpt4o")
+    eng = oe_mod.OpenaiAI()
+    assert eng.model == "gpt-4o"
+    assert "api.openai.com" in eng.base_url
+    assert eng.current_model_name() == "gpt4o"
+
+
+def test_engine_set_registry_model(tmp_config):
+    eng = oe_mod.OpenaiAI()
+    eng.add_model({"name": "gpt4o", "base_url": "https://api.openai.com/v1",
+                   "api_key": "sk", "model": "gpt-4o"})
+    assert eng.set_registry_model("gpt4o") is True
+    assert eng.model == "gpt-4o"
+    assert eng.set_registry_model("ghost") is False
+
+
+def test_engine_does_not_clobber_existing_set_model(tmp_config):
+    """原有轻量 set_model（只改 model 名）必须仍然可用，不被注册表方法覆盖。"""
+    eng = oe_mod.OpenaiAI()
+    eng.set_model("gpt-4o-mini")  # 原有方法：只改 self.model
+    assert eng.model == "gpt-4o-mini"
+    # 注册表方法仍在
+    assert hasattr(eng, "set_registry_model")
+    assert hasattr(eng, "list_registry_models")
+
+
+# ── CLI 命令路由 ──
+
+def _make_fake_cli(eng):
+    """复制 cli_base 的模型命令方法到轻量对象，避免实例化整个 CliBase。"""
+    from xcli_core import cli_base
+    cls = type("FakeCli", (), {})
+    cls.handle_model_command = cli_base.BaseAICLI.handle_model_command
+    cls._model_list = cli_base.BaseAICLI._model_list
+    cls._model_switch = cli_base.BaseAICLI._model_switch
+    cls._model_add_interactive = cli_base.BaseAICLI._model_add_interactive
+    return cls()
+
+
+def test_cli_model_list_and_switch(tmp_config, monkeypatch):
+    from xcli_core import cli_base
+    eng = oe_mod.OpenaiAI()
+    eng.add_model({"name": "gpt4o", "base_url": "u", "api_key": "k", "model": "gpt-4o"})
+
+    cli = _make_fake_cli(eng)
+    cli.current_engine = eng
+    cli.current_model = None
+
+    # 列出
+    captured = {}
+    monkeypatch.setattr("builtins.print", lambda *a, **k: captured.setdefault("out", []).append(a))
+    cli.handle_model_command("list")
+    assert any("gpt4o" in str(x) for x in captured["out"])
+
+    # 切换
+    cli.handle_model_command("gpt4o")
+    assert cli.current_model == "gpt4o"
+    assert eng.model == "gpt-4o"
+
+
+def test_cli_model_switch_missing(tmp_config, monkeypatch):
+    eng = oe_mod.OpenaiAI()
+    cli = _make_fake_cli(eng)
+    cli.current_engine = eng
+    cli.current_model = None
+    captured = {}
+    monkeypatch.setattr("builtins.print", lambda *a, **k: captured.setdefault("out", []).append(a))
+    cli.handle_model_command("ghost")
+    assert any("未找到" in str(x) for x in captured["out"])
+    assert cli.current_model is None
+
+
+def test_cli_model_add_interactive(tmp_config, monkeypatch):
+    eng = oe_mod.OpenaiAI()
+    cli = _make_fake_cli(eng)
+    cli.current_engine = eng
+    cli.current_model = None
+    answers = iter(["mygpt", "https://x/v1", "sk-1", "gpt-x"])
+    monkeypatch.setattr("builtins.input", lambda *a, **k: next(answers))
+    captured = {}
+    monkeypatch.setattr("builtins.print", lambda *a, **k: captured.setdefault("out", []).append(a))
+    cli.handle_model_command("add")
+    models, current = eng.list_registry_models()
+    assert any(m["name"] == "mygpt" for m in models)
+    assert cli.current_model == "mygpt"
diff --git a/tests/test_startup_and_fc.py b/tests/test_startup_and_fc.py
index 1910d84..8757494 100644
--- a/tests/test_startup_and_fc.py
+++ b/tests/test_startup_and_fc.py
@@ -241,7 +241,7 @@ class TestStartupSlim:
         out = buf.getvalue()
 
         assert "/fc" in out and "/diff" in out, "速查表要覆盖新命令"
-        assert 18 <= len(out.strip().splitlines()) <= 26
+        assert 18 <= len(out.strip().splitlines()) <= 34
 
     def test_diff_mode_remembered(self):
         src = _read("xcli_core", "cli_core.py")
diff --git a/xcli_core/cli_base.py b/xcli_core/cli_base.py
index e974680..ba77c44 100644
--- a/xcli_core/cli_base.py
+++ b/xcli_core/cli_base.py
@@ -81,6 +81,13 @@ class BaseAICLI:
             self.current_engine = None
         if self.current_engine:
             self.current_engine.cli = self  # 设置引用以便访问插件
+            # 记录当前模型（openai 引擎注册表名，其它引擎取 model 值）
+            try:
+                self.current_model = self.current_engine.current_model_name()
+            except Exception:
+                self.current_model = getattr(self.current_engine, 'model', None)
+        else:
+            self.current_model = None
 
         # 初始化安全层
         from .safety import get_safety
@@ -306,6 +313,83 @@ class BaseAICLI:
                 help_lines.append(f"  /engine {cmd:<10} - 执行{cmd}命令")
         return '\n'.join(help_lines) if help_lines else "  无可用引擎管理命令"
 
+    # ── 模型管理（OpenAI 引擎多模型切换）──
+
+    def handle_model_command(self, args):
+        """处理 /model 命令族。仅对 openai 引擎有效。"""
+        eng = self.current_engine
+        if getattr(eng, 'name', None) != 'openai':
+            cur = getattr(eng, 'name', '?')
+            print(f"{Fore.RED}模型管理仅适用于 openai 引擎（当前: {cur}）。"
+                  f"先 /engine switch openai{Style.RESET_ALL}")
+            return
+
+        if not args or args == 'list':
+            self._model_list(eng)
+            return
+
+        parts = args.split(' ', 1)
+        cmd = parts[0]
+        rest = parts[1].strip() if len(parts) > 1 else ''
+        if cmd == 'add':
+            self._model_add_interactive(eng)
+        elif cmd in ('rm', 'remove', 'del'):
+            if not rest:
+                print(f"{Fore.RED}用法: /model rm <名称>{Style.RESET_ALL}")
+                return
+            if eng.remove_model(rest):
+                print(f"{Fore.GREEN}已删除模型: {rest}{Style.RESET_ALL}")
+            else:
+                print(f"{Fore.RED}未找到模型: {rest}{Style.RESET_ALL}")
+        elif cmd in ('set', 'switch'):
+            self._model_switch(eng, rest)
+        else:
+            # 无子命令：/model <名称> 视为切换
+            self._model_switch(eng, cmd)
+
+    def _model_list(self, eng):
+        models, current = eng.list_registry_models()
+        if not models:
+            print(f"{Fore.YELLOW}尚未配置任何模型，用 /model add 添加{Style.RESET_ALL}")
+            return
+        print(f"{Fore.GREEN}已配置的 OpenAI 模型:{Style.RESET_ALL}")
+        for m in models:
+            mark = f"{Fore.CYAN} *{Style.RESET_ALL}" if m.get('name') == current else ""
+            print(f"  {m.get('name')}{mark}  ({m.get('model')} @ {m.get('base_url') or '无 base_url'})")
+        print(f"{Fore.CYAN}当前: {current} ｜ /model <名称> 切换 ｜ /model add 新增 ｜ "
+              f"/model rm <名称> 删除{Style.RESET_ALL}")
+
+    def _model_switch(self, eng, name):
+        if not name:
+            print(f"{Fore.RED}用法: /model <名称>  或 /model 查看列表{Style.RESET_ALL}")
+            return
+        if eng.set_registry_model(name):
+            self.current_model = name
+            print(f"{Fore.GREEN}已切换到模型: {name}{Style.RESET_ALL}")
+        else:
+            print(f"{Fore.RED}未找到模型: {name}（/model 查看可用）{Style.RESET_ALL}")
+
+    def _model_add_interactive(self, eng):
+        print(f"{Fore.CYAN}添加 OpenAI 模型（回车留空则用默认/为空）{Style.RESET_ALL}")
+        try:
+            name = input(f"{Fore.CYAN}名称(用于切换, 如 gpt4o): {Style.RESET_ALL}").strip()
+            if not name:
+                print(f"{Fore.RED}名称不能为空{Style.RESET_ALL}")
+                return
+            base_url = input(f"{Fore.CYAN}base_url(如 https://api.openai.com/v1): {Style.RESET_ALL}").strip()
+            api_key = input(f"{Fore.CYAN}api_key: {Style.RESET_ALL}").strip()
+            model = input(f"{Fore.CYAN}model(如 gpt-4o): {Style.RESET_ALL}").strip()
+            if not model:
+                print(f"{Fore.RED}model 不能为空{Style.RESET_ALL}")
+                return
+        except (EOFError, KeyboardInterrupt):
+            print(f"{Fore.YELLOW}\n已取消添加{Style.RESET_ALL}")
+            return
+        eng.add_model({"name": name, "base_url": base_url, "api_key": api_key, "model": model})
+        eng.set_registry_model(name)
+        self.current_model = name
+        print(f"{Fore.GREEN}已添加并切换到模型: {name}{Style.RESET_ALL}")
+
     # ── 引擎切换 ──
 
     def get_available_engines(self):
diff --git a/xcli_core/cli_core.py b/xcli_core/cli_core.py
index a7e22ee..7b140fa 100644
--- a/xcli_core/cli_core.py
+++ b/xcli_core/cli_core.py
@@ -1040,7 +1040,7 @@ multi 操作支持一次修改多处：
 
         # 一行速览，完整命令清单收进 /help
         print(f"{Fore.CYAN}/help 全部命令 · /quit 退出 · /tui 图形界面 · "
-              f"@文件路径 读文件给 AI{Style.RESET_ALL}")
+              f"/model 换模型 · @文件路径 读文件给 AI{Style.RESET_ALL}")
 
         extras = []
         loaded_engines = list(self.engines.keys())
@@ -1141,6 +1141,11 @@ multi 操作支持一次修改多处：
                         print(f"{Fore.RED}当前引擎不支持该命令或命令执行失败{Style.RESET_ALL}")
                     continue
 
+                # /model 命令族 — OpenAI 引擎多模型在线增删切换
+                if user_input == '/model' or user_input.startswith('/model '):
+                    self.handle_model_command(user_input[7:].strip())
+                    continue
+
                 # /manual 快捷命令 — 切换到 manual 引擎或执行 manual 子命令
                 if user_input == '/manual' or user_input.startswith('/manual '):
                     args = user_input[8:].strip() if user_input.startswith('/manual ') else ''
diff --git a/xcli_core/cli_display.py b/xcli_core/cli_display.py
index 4c46a1b..7536764 100644
--- a/xcli_core/cli_display.py
+++ b/xcli_core/cli_display.py
@@ -384,6 +384,10 @@ class DisplayMixin:
             ('/tui', '切换到 TUI 图形模式'),
             ('/engine list', '查看可用 AI 引擎'),
             ('/engine switch <名>', '切换 AI 引擎'),
+            ('/model', '列出已配置的 OpenAI 模型'),
+            ('/model <名称>', '切换当前 OpenAI 模型'),
+            ('/model add', '交互式新增 OpenAI 模型'),
+            ('/model rm <名称>', '删除已配置的模型'),
             ('/fc [reset]', '查看/清除 FC 能力探测缓存'),
             ('/safe', '切换安全模式 (普通→人工→无限制)'),
             ('/diff', '切换 diff 显示模式 (弹窗/主终端)'),
diff --git a/xcli_core/model_registry.py b/xcli_core/model_registry.py
new file mode 100644
index 0000000..6123c4b
--- /dev/null
+++ b/xcli_core/model_registry.py
@@ -0,0 +1,145 @@
+"""OpenAI 格式模型注册表。
+
+把「多个 OpenAI 格式模型」从 config.json 的单槽位升级为可管理的列表，
+支持在线增删、切换、持久化，免去每次手改配置文件。
+
+配置结构（api.engines.openai）:
+    {
+      "models": [
+        {"name": "讯飞xop", "base_url": "...", "api_key": "...", "model": "xophunyuan7bmt"},
+        {"name": "gpt4o",   "base_url": "https://api.openai.com/v1", "api_key": "...", "model": "gpt-4o"}
+      ],
+      "current": "讯飞xop"
+    }
+
+向后兼容：若没有 models 列表，把扁平的 api_key/base_url/model 当作单条隐式模型，
+其 name 取 model 值（空则 "default"）。
+"""
+
+from xcli_core.config import load_config, save_config
+
+# 测试可临时覆盖配置路径
+_CONFIG_PATH = None
+
+
+def _set_config_path(path):
+    """仅供测试：指向临时 config.json"""
+    global _CONFIG_PATH
+    _CONFIG_PATH = path
+
+
+def _load():
+    if _CONFIG_PATH:
+        try:
+            with open(_CONFIG_PATH, 'r', encoding='utf-8') as f:
+                return __import__('json').load(f)
+        except (FileNotFoundError, __import__('json').JSONDecodeError):
+            return {"api": {"engines": {}}, "system": {}}
+    return load_config()
+
+
+def _persist(cfg):
+    if _CONFIG_PATH:
+        with open(_CONFIG_PATH, 'w', encoding='utf-8') as f:
+            __import__('json').dump(cfg, f, ensure_ascii=False, indent=2)
+        return
+    save_config(cfg)
+
+
+def _openai_block(cfg):
+    return cfg.setdefault("api", {}).setdefault("engines", {}).setdefault("openai", {})
+
+
+def list_models(cfg=None):
+    """返回 (models:list[dict], current:str|None)。
+
+    无 models 列表时返回单条隐式模型（由扁平 api_key/base_url/model 构成）。
+    """
+    cfg = cfg or _load()
+    block = _openai_block(cfg)
+    models = block.get("models")
+    if not models:
+        m = block.get("model") or "default"
+        implicit = {
+            "name": m,
+            "base_url": block.get("base_url", ""),
+            "api_key": block.get("api_key", ""),
+            "model": block.get("model", ""),
+        }
+        return [implicit], (block.get("current") or m)
+    current = block.get("current") or (models[0]["name"] if models else None)
+    return models, current
+
+
+def get_model(name=None, cfg=None):
+    """取某模型配置；name=None 取 current。找不到返回 None。"""
+    models, current = list_models(cfg)
+    target = name or current
+    if not target:
+        return None
+    for m in models:
+        if m.get("name") == target:
+            return dict(m)
+    return None
+
+
+def set_current(name):
+    """把 current 指针指向 name 并落盘。name 必须存在，否则返回 False。"""
+    cfg = _load()
+    block = _openai_block(cfg)
+    models = block.get("models") or []
+    if not any(m.get("name") == name for m in models):
+        return False
+    block["current"] = name
+    _persist(cfg)
+    return True
+
+
+def add_model(entry):
+    """新增或更新模型，落盘并返回其 name。
+
+    entry: {"name", "base_url", "api_key", "model"}。同名则更新。
+    首次添加会从扁平配置迁移出第一条隐式模型，且保持 current 不跳变。
+    """
+    name = (entry.get("name") or "").strip()
+    if not name:
+        raise ValueError("模型 name 不能为空")
+    cfg = _load()
+    block = _openai_block(cfg)
+    models = block.get("models")
+    if not models:
+        old_name = block.get("model") or "default"
+        models = [{
+            "name": old_name,
+            "base_url": block.get("base_url", ""),
+            "api_key": block.get("api_key", ""),
+            "model": block.get("model", ""),
+        }]
+        block["models"] = models
+        if not block.get("current"):
+            block["current"] = old_name
+    for m in models:
+        if m.get("name") == name:
+            m.update(entry)
+            _persist(cfg)
+            return name
+    models.append(dict(entry))
+    _persist(cfg)
+    return name
+
+
+def remove_model(name):
+    """删除模型，返回是否成功（找不到返回 False）。
+    若删除的是 current，则 current 回退到列表第一个。
+    """
+    cfg = _load()
+    block = _openai_block(cfg)
+    models = block.get("models") or []
+    new = [m for m in models if m.get("name") != name]
+    if len(new) == len(models):
+        return False
+    block["models"] = new
+    if block.get("current") == name:
+        block["current"] = new[0]["name"] if new else None
+    _persist(cfg)
+    return True