diff --git a/internal/apps/oauth/constants.go b/internal/apps/oauth/constants.go
index 3fde9096..bb066a61 100644
--- a/internal/apps/oauth/constants.go
+++ b/internal/apps/oauth/constants.go
@@ -16,10 +16,6 @@ const (
 	UserObjKey                      = "user_obj"
 	TokenAuthKey                    = "token_auth"  // 标记当前请求是否通过 Access Token 鉴权
 	TokenAdminKey                   = "token_admin" // Access Token 本身是否具有管理员权限
-	PendingOAuthSourceIDKey         = "pending_oauth_source_id"
-	PendingOAuthExternalIDKey       = "pending_oauth_external_id"
-	PendingOAuthExternalUsernameKey = "pending_oauth_external_username"
-	PendingOAuthEmailKey            = "pending_oauth_email"
 	SessionTokenKey                 = "oauth_session_token" //nolint:gosec // false positive: this is a session key, not hardcoded credentials
 )
 
diff --git a/internal/apps/oauth/oauth_test.go b/internal/apps/oauth/oauth_test.go
index 1fd99ab1..dd254e31 100644
--- a/internal/apps/oauth/oauth_test.go
+++ b/internal/apps/oauth/oauth_test.go
@@ -1068,3 +1068,116 @@ func TestExternalAccountsListAndDelete(t *testing.T) {
 		t.Error("binding record was not deleted from DB")
 	}
 }
+
+func TestOIDCPolicyEnforcement(t *testing.T) {
+	initializeTestConfig()
+	dbConn := setupTestDB(t)
+	mockRedis := newMockRedisClient()
+	seedTestAuthSource(t, dbConn) // seeds testSourceName ("linuxdo") active=true
+
+	// Set up mock client & router
+	var state string
+	httpMock := newMockOIDCClient(testIssuerURL, testClientID, &state, "88888", "test_oauth_user", "oauth@linux.do", "Oauth Test User")
+	util.SetHTTPClient(httpMock)
+	router := setupTestRouter(dbConn, mockRedis, httpMock)
+
+	// --- 1. Test GetLoginURL enforcement ---
+	// Disable globally
+	dbConn.Create(&model.SystemConfig{
+		Key:   model.ConfigKeyOIDCLoginEnabled,
+		Value: "false",
+	})
+	mockRedis.Del(context.Background(), db.PrefixedKey(model.SystemConfigRedisHashKey)+":"+model.ConfigKeyOIDCLoginEnabled)
+	wLoginDisabled := performRequest(router, http.MethodGet, "/api/v1/oauth/login?source="+testSourceName, nil, nil, nil)
+	if wLoginDisabled.Code != http.StatusBadRequest {
+		t.Errorf("expected 400 when OIDC globally disabled, got %d", wLoginDisabled.Code)
+	}
+
+	// Re-enable globally, but deactivate source
+	dbConn.Model(&model.SystemConfig{}).Where("key = ?", model.ConfigKeyOIDCLoginEnabled).Update("value", "true")
+	mockRedis.Del(context.Background(), db.PrefixedKey(model.SystemConfigRedisHashKey)+":"+model.ConfigKeyOIDCLoginEnabled)
+	dbConn.Model(&model.AuthSource{}).Where("name = ?", testSourceName).Update("is_active", false)
+
+	wSourceInactive := performRequest(router, http.MethodGet, "/api/v1/oauth/login?source="+testSourceName, nil, nil, nil)
+	if wSourceInactive.Code != http.StatusBadRequest {
+		t.Errorf("expected 400 when OIDC source is inactive, got %d", wSourceInactive.Code)
+	}
+
+	// --- 2. Test Authorize enforcement ---
+	// Deactivate globally again
+	dbConn.Model(&model.SystemConfig{}).Where("key = ?", model.ConfigKeyOIDCLoginEnabled).Update("value", "false")
+	mockRedis.Del(context.Background(), db.PrefixedKey(model.SystemConfigRedisHashKey)+":"+model.ConfigKeyOIDCLoginEnabled)
+	dbConn.Model(&model.AuthSource{}).Where("name = ?", testSourceName).Update("is_active", true)
+
+	wAuthDisabled := performRequest(router, http.MethodGet, "/api/v1/oauth/"+testSourceName+"/authorize", nil, nil, nil)
+	if wAuthDisabled.Code != http.StatusBadRequest {
+		t.Errorf("expected 400 when OIDC globally disabled in Authorize, got %d", wAuthDisabled.Code)
+	}
+
+	// --- 3. Test Callback enforcement ---
+	// Set up a valid state beforehand (when enabled)
+	dbConn.Model(&model.SystemConfig{}).Where("key = ?", model.ConfigKeyOIDCLoginEnabled).Update("value", "true")
+	mockRedis.Del(context.Background(), db.PrefixedKey(model.SystemConfigRedisHashKey)+":"+model.ConfigKeyOIDCLoginEnabled)
+	dbConn.Model(&model.AuthSource{}).Where("name = ?", testSourceName).Update("is_active", true)
+
+	wLogin := performRequest(router, http.MethodGet, "/api/v1/oauth/login?source="+testSourceName, nil, nil, nil)
+
+	if wLogin.Code != http.StatusOK {
+		t.Fatalf("failed to setup login: %s", wLogin.Body.String())
+	}
+	var loginUrlResp struct {
+		Data OAuthAuthorizeResponse `json:"data"`
+	}
+	_ = json.Unmarshal(wLogin.Body.Bytes(), &loginUrlResp)
+	parsedURL, _ := url.Parse(loginUrlResp.Data.AuthorizeURL)
+	state = parsedURL.Query().Get("state")
+
+	var anonymousCookie *http.Cookie
+	for _, cookie := range wLogin.Result().Cookies() {
+		if cookie.Name == config.Config.App.SessionCookieName {
+			anonymousCookie = cookie
+			break
+		}
+	}
+
+	// Now disable OIDC globally and attempt callback
+	dbConn.Model(&model.SystemConfig{}).Where("key = ?", model.ConfigKeyOIDCLoginEnabled).Update("value", "false")
+	mockRedis.Del(context.Background(), db.PrefixedKey(model.SystemConfigRedisHashKey)+":"+model.ConfigKeyOIDCLoginEnabled)
+	reqBody := fmt.Sprintf(`{"state":"%s","code":"test_auth_code"}`, state)
+	wCallbackDisabled := performRequest(router, http.MethodPost, "/api/v1/oauth/callback", []byte(reqBody), map[string]string{
+		"Content-Type": "application/json",
+	}, []*http.Cookie{anonymousCookie})
+	if wCallbackDisabled.Code != http.StatusBadRequest {
+		t.Errorf("expected 400 for callback when OIDC globally disabled, got %d, body: %s", wCallbackDisabled.Code, wCallbackDisabled.Body.String())
+	}
+
+	// Enable globally but deactivate source and attempt callback
+	dbConn.Model(&model.SystemConfig{}).Where("key = ?", model.ConfigKeyOIDCLoginEnabled).Update("value", "true")
+	mockRedis.Del(context.Background(), db.PrefixedKey(model.SystemConfigRedisHashKey)+":"+model.ConfigKeyOIDCLoginEnabled)
+	dbConn.Model(&model.AuthSource{}).Where("name = ?", testSourceName).Update("is_active", false)
+
+	// Since callback deletes state, we need to generate state again
+	dbConn.Model(&model.AuthSource{}).Where("name = ?", testSourceName).Update("is_active", true)
+	wLogin2 := performRequest(router, http.MethodGet, "/api/v1/oauth/login?source="+testSourceName, nil, nil, nil)
+	_ = json.Unmarshal(wLogin2.Body.Bytes(), &loginUrlResp)
+	parsedURL, _ = url.Parse(loginUrlResp.Data.AuthorizeURL)
+	state = parsedURL.Query().Get("state")
+	var anonymousCookie2 *http.Cookie
+	for _, cookie := range wLogin2.Result().Cookies() {
+		if cookie.Name == config.Config.App.SessionCookieName {
+			anonymousCookie2 = cookie
+			break
+		}
+	}
+
+	// Deactivate source
+	dbConn.Model(&model.AuthSource{}).Where("name = ?", testSourceName).Update("is_active", false)
+	reqBody2 := fmt.Sprintf(`{"state":"%s","code":"test_auth_code"}`, state)
+	wCallbackSourceInactive := performRequest(router, http.MethodPost, "/api/v1/oauth/callback", []byte(reqBody2), map[string]string{
+		"Content-Type": "application/json",
+	}, []*http.Cookie{anonymousCookie2})
+	if wCallbackSourceInactive.Code != http.StatusBadRequest {
+		t.Errorf("expected 400 for callback when OIDC source deactivated, got %d, body: %s", wCallbackSourceInactive.Code, wCallbackSourceInactive.Body.String())
+	}
+}
+
diff --git a/internal/apps/oauth/sources.go b/internal/apps/oauth/sources.go
index c08c282f..5651580d 100644
--- a/internal/apps/oauth/sources.go
+++ b/internal/apps/oauth/sources.go
@@ -90,6 +90,15 @@ func hashSessionToken(token string) string {
 	return hex.EncodeToString(h.Sum(nil))
 }
 
+func isOIDCLoginEnabled(ctx context.Context) bool {
+	enabled, err := model.GetBoolByKey(ctx, model.ConfigKeyOIDCLoginEnabled)
+	if err != nil {
+		return true
+	}
+	return enabled
+}
+
+
 
 func resolveAuthSource(sourceName string) (*model.AuthSource, error) {
 	name := strings.TrimSpace(strings.ToLower(sourceName))
@@ -348,12 +357,24 @@ func GetLoginSources(c *gin.Context) {
 // @Failure 500 {object} util.ResponseAny "Redis 异常或构造 URL 失败"
 // @Router /api/v1/oauth/login [get]
 func GetLoginURL(c *gin.Context) {
+	ctx := c.Request.Context()
+	if !isOIDCLoginEnabled(ctx) {
+		c.JSON(http.StatusBadRequest, util.Err(AuthSourceDisabled))
+		return
+	}
+
 	source, err := resolveAuthSource(c.Query("source"))
 	if err != nil {
 		c.JSON(http.StatusBadRequest, util.Err(err.Error()))
 		return
 	}
 
+	if !source.IsActive {
+		c.JSON(http.StatusBadRequest, util.Err(AuthSourceDisabled))
+		return
+	}
+
+
 	session := sessions.Default(c)
 	token, isNew := ensureSessionToken(session)
 	if isNew {
@@ -418,11 +439,18 @@ func buildAuthorizeURL(ctx context.Context, source *model.AuthSource, state stri
 // @Failure 500 {object} util.ResponseAny "Redis 异常或构造 URL 失败"
 // @Router /api/v1/oauth/{source}/authorize [get]
 func Authorize(c *gin.Context) {
+	ctx := c.Request.Context()
+	if !isOIDCLoginEnabled(ctx) {
+		c.JSON(http.StatusBadRequest, util.Err(AuthSourceDisabled))
+		return
+	}
+
 	source, err := resolveAuthSource(c.Param("source"))
 	if err != nil {
 		c.JSON(http.StatusBadRequest, util.Err(err.Error()))
 		return
 	}
+
 	if !source.IsActive {
 		c.JSON(http.StatusBadRequest, util.Err(AuthSourceDisabled))
 		return
@@ -533,12 +561,23 @@ func Callback(c *gin.Context) {
 
 
 
+	if !isOIDCLoginEnabled(ctx) {
+		c.JSON(http.StatusBadRequest, util.Err(AuthSourceDisabled))
+		return
+	}
+
 	source, err := resolveAuthSource(payload.SourceName)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, util.Err(err.Error()))
 		return
 	}
 
+	if !source.IsActive {
+		c.JSON(http.StatusBadRequest, util.Err(AuthSourceDisabled))
+		return
+	}
+
+
 	redirectURL, err := getFrontendLoginRedirectURL(ctx)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, util.Err(err.Error()))
@@ -633,19 +672,11 @@ func handleCallbackRegister(ctx context.Context, c *gin.Context, source *model.A
 	}
 
 	if !registrationEnabled {
-		session := sessions.Default(c)
-		session.Set(PendingOAuthSourceIDKey, source.ID)
-		session.Set(PendingOAuthExternalIDKey, userInfo.Sub)
-		session.Set(PendingOAuthExternalUsernameKey, userInfo.Username)
-		session.Set(PendingOAuthEmailKey, userInfo.Email)
-		if err := session.Save(); err != nil {
-			c.JSON(http.StatusInternalServerError, util.Err(err.Error()))
-			return model.User{}, false
-		}
 		c.JSON(http.StatusOK, util.OK(buildCallbackResult(nil, "need_bind")))
 		return model.User{}, false
 	}
 
+
 	username, uniqueErr := uniqueUsername(ctx, userInfo.Username)
 	if uniqueErr != nil {
 		c.JSON(http.StatusInternalServerError, util.Err(uniqueErr.Error()))
diff --git a/internal/apps/user/logics.go b/internal/apps/user/logics.go
index ea0e4bd7..26e72e2a 100644
--- a/internal/apps/user/logics.go
+++ b/internal/apps/user/logics.go
@@ -241,50 +241,7 @@ func validateRegisterEmailVerification(ctx context.Context, req *registerRequest
 	return nil
 }
 
-// completePendingOAuthBinding 完成登录后的 OAuth 待绑定绑定流程
-func completePendingOAuthBinding(ctx context.Context, session sessions.Session, user *model.User) {
-	pendingSourceID := session.Get(oauth.PendingOAuthSourceIDKey)
-	pendingExternalID := session.Get(oauth.PendingOAuthExternalIDKey)
-	pendingExternalUsername := session.Get(oauth.PendingOAuthExternalUsernameKey)
-	pendingEmail := session.Get(oauth.PendingOAuthEmailKey)
 
-	if pendingSourceID == nil || pendingExternalID == nil {
-		return
-	}
-
-	var sourceID uint64
-	switch v := pendingSourceID.(type) {
-	case uint64:
-		sourceID = v
-	case int:
-		if v >= 0 {
-			sourceID = uint64(v)
-		}
-	case float64:
-		if v >= 0 && v <= 18446744073709551615.0 {
-			sourceID = uint64(v)
-		}
-	}
-	externalID, _ := pendingExternalID.(string)
-	externalUsername, _ := pendingExternalUsername.(string)
-	email, _ := pendingEmail.(string)
-
-	if sourceID != 0 && externalID != "" {
-		_ = model.BindExternalAccount(ctx, &model.ExternalAccount{
-			AuthSourceID:     sourceID,
-			UserID:           user.ID,
-			ExternalID:       externalID,
-			ExternalUsername: externalUsername,
-			Email:            email,
-		})
-	}
-
-	session.Delete(oauth.PendingOAuthSourceIDKey)
-	session.Delete(oauth.PendingOAuthExternalIDKey)
-	session.Delete(oauth.PendingOAuthExternalUsernameKey)
-	session.Delete(oauth.PendingOAuthEmailKey)
-	_ = session.Save()
-}
 
 type updateProfileRequest struct {
 	Nickname  string `json:"nickname"`
diff --git a/internal/apps/user/routers.go b/internal/apps/user/routers.go
index b55185da..1e632a9d 100644
--- a/internal/apps/user/routers.go
+++ b/internal/apps/user/routers.go
@@ -164,9 +164,6 @@ func Login(c *gin.Context) {
 		return
 	}
 
-	// 检查是否有未完成 of OAuth/OIDC 绑定
-	completePendingOAuthBinding(ctx, session, &user)
-
 	c.JSON(http.StatusOK, util.OK(oauth.BuildBasicUserInfo(&user, needChangePassword)))
 }