diff --git a/gateway/config.py b/gateway/config.py
index a29f73069248..71c08f6ab6aa 100644
--- a/gateway/config.py
+++ b/gateway/config.py
@@ -1637,10 +1637,8 @@ def _enable_from_env(platform: Platform) -> PlatformConfig:
     feishu_app_id = os.getenv("FEISHU_APP_ID")
     feishu_app_secret = os.getenv("FEISHU_APP_SECRET")
     if feishu_app_id and feishu_app_secret:
-        if Platform.FEISHU not in config.platforms:
-            config.platforms[Platform.FEISHU] = PlatformConfig()
-        config.platforms[Platform.FEISHU].enabled = True
-        config.platforms[Platform.FEISHU].extra.update({
+        feishu_config = _enable_from_env(Platform.FEISHU)
+        feishu_config.extra.update({
             "app_id": feishu_app_id,
             "app_secret": feishu_app_secret,
             "domain": os.getenv("FEISHU_DOMAIN", "feishu"),
@@ -1648,13 +1646,13 @@ def _enable_from_env(platform: Platform) -> PlatformConfig:
         })
         feishu_encrypt_key = os.getenv("FEISHU_ENCRYPT_KEY", "")
         if feishu_encrypt_key:
-            config.platforms[Platform.FEISHU].extra["encrypt_key"] = feishu_encrypt_key
+            feishu_config.extra["encrypt_key"] = feishu_encrypt_key
         feishu_verification_token = os.getenv("FEISHU_VERIFICATION_TOKEN", "")
         if feishu_verification_token:
-            config.platforms[Platform.FEISHU].extra["verification_token"] = feishu_verification_token
+            feishu_config.extra["verification_token"] = feishu_verification_token
         feishu_home = os.getenv("FEISHU_HOME_CHANNEL")
         if feishu_home:
-            config.platforms[Platform.FEISHU].home_channel = HomeChannel(
+            feishu_config.home_channel = HomeChannel(
                 platform=Platform.FEISHU,
                 chat_id=feishu_home,
                 name=os.getenv("FEISHU_HOME_CHANNEL_NAME", "Home"),
diff --git a/tests/gateway/test_config.py b/tests/gateway/test_config.py
index 2ccb63d8864c..cb07f87bdacb 100644
--- a/tests/gateway/test_config.py
+++ b/tests/gateway/test_config.py
@@ -1045,3 +1045,52 @@ def test_existing_platform_configs_accept_home_channel_env_overrides(self):
             home = config.platforms[platform].home_channel
             assert home is not None, f"{platform.value}: home_channel should not be None"
             assert (home.chat_id, home.name) == expected, platform.value
+
+
+class TestFeishuEnvOverrideRespectsExplicitEnabled:
+    """Feishu env overrides must not force-enable when config explicitly sets enabled=false."""
+
+    def test_feishu_env_vars_respect_explicit_disabled(self, monkeypatch):
+        """When config.yaml has feishu.enabled: false, env vars must NOT override it."""
+        monkeypatch.setenv("FEISHU_APP_ID", "test_app_id")
+        monkeypatch.setenv("FEISHU_APP_SECRET", "test_secret")
+        config = GatewayConfig(platforms={
+            Platform.FEISHU: PlatformConfig(
+                enabled=False,
+                extra={"_enabled_explicit": True},
+            ),
+        })
+        _apply_env_overrides(config)
+        assert not config.platforms[Platform.FEISHU].enabled
+
+    def test_feishu_env_vars_enable_when_not_explicitly_disabled(self, monkeypatch):
+        """When config has no explicit enabled setting, env vars should enable Feishu."""
+        monkeypatch.setenv("FEISHU_APP_ID", "test_app_id")
+        monkeypatch.setenv("FEISHU_APP_SECRET", "test_secret")
+        config = GatewayConfig(platforms={})
+        _apply_env_overrides(config)
+        assert config.platforms[Platform.FEISHU].enabled
+
+    def test_feishu_env_vars_populate_extra_fields(self, monkeypatch):
+        """Env vars should populate app_id, app_secret, domain, connection_mode."""
+        monkeypatch.setenv("FEISHU_APP_ID", "my_id")
+        monkeypatch.setenv("FEISHU_APP_SECRET", "my_secret")
+        monkeypatch.setenv("FEISHU_DOMAIN", "lark")
+        monkeypatch.setenv("FEISHU_CONNECTION_MODE", "long_polling")
+        config = GatewayConfig(platforms={})
+        _apply_env_overrides(config)
+        extra = config.platforms[Platform.FEISHU].extra
+        assert extra["app_id"] == "my_id"
+        assert extra["app_secret"] == "my_secret"
+        assert extra["domain"] == "lark"
+        assert extra["connection_mode"] == "long_polling"
+
+    def test_feishu_env_vars_enable_when_config_has_no_enabled_key(self, monkeypatch):
+        """When feishu config exists but has no enabled key, env vars should enable."""
+        monkeypatch.setenv("FEISHU_APP_ID", "test_id")
+        monkeypatch.setenv("FEISHU_APP_SECRET", "test_secret")
+        config = GatewayConfig(platforms={
+            Platform.FEISHU: PlatformConfig(),  # enabled defaults to False
+        })
+        _apply_env_overrides(config)
+        assert config.platforms[Platform.FEISHU].enabled