diff --git a/internal/service/api_config_connection.go b/internal/service/api_config_connection.go
new file mode 100644
index 0000000..8b75613
--- /dev/null
+++ b/internal/service/api_config_connection.go
@@ -0,0 +1,171 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+)
+
+// TestConnection 测试 API 连接。
+func (s *ApiConfigService) TestConnection(ctx context.Context, provider string) (string, error) {
+	cfg, err := s.GetByProvider(ctx, provider)
+	if err != nil {
+		return "error", err
+	}
+
+	// 根据不同提供者执行不同的测试逻辑
+	switch provider {
+	case "tmdb":
+		return s.testTMDb(cfg)
+	case "openai":
+		return s.testOpenAI(cfg)
+	case "deepseek":
+		return s.testDeepSeek(cfg)
+	case "siliconflow":
+		return s.testSiliconFlow(cfg)
+	default:
+		return "unknown", fmt.Errorf("no test implemented for provider: %s", provider)
+	}
+}
+
+// testTMDb 测试 TMDb API 连接。
+func (s *ApiConfigService) testTMDb(cfg *model.ApiConfig) (string, error) {
+	if cfg.APIKey == "" {
+		return "error", errors.New("API key is required")
+	}
+
+	baseURL := strings.TrimRight(cfg.BaseURL, "/")
+	if baseURL == "" {
+		baseURL = strings.TrimRight(s.cfg.Secrets.TMDbAPIProxy, "/")
+	}
+	if baseURL == "" {
+		baseURL = "https://api.themoviedb.org/3"
+	}
+	testURL := baseURL + "/configuration?api_key=" + url.QueryEscape(cfg.APIKey)
+	req, err := http.NewRequestWithContext(context.Background(), http.MethodGet, testURL, nil)
+	if err != nil {
+		return "error", err
+	}
+	client := NewExternalHTTPClient(10 * time.Second)
+	resp, err := client.Do(req)
+	if err != nil {
+		return "error", fmt.Errorf("TMDb connection failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		return "success", nil
+	}
+	if resp.StatusCode == 401 {
+		return "invalid", errors.New("invalid API key")
+	}
+	return "error", fmt.Errorf("TMDb API returned status %d", resp.StatusCode)
+}
+
+// testOpenAI 测试 OpenAI API 连接。
+func (s *ApiConfigService) testOpenAI(cfg *model.ApiConfig) (string, error) {
+	if cfg.APIKey == "" {
+		return "error", errors.New("API key is required")
+	}
+
+	baseURL := cfg.BaseURL
+	if baseURL == "" {
+		baseURL = "https://api.openai.com/v1"
+	}
+
+	testURL := baseURL + "/models"
+	req, err := http.NewRequest("GET", testURL, nil)
+	if err != nil {
+		return "error", err
+	}
+	req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
+
+	client := &http.Client{Timeout: 10 * time.Second}
+	resp, err := client.Do(req.WithContext(context.Background()))
+	if err != nil {
+		return "error", fmt.Errorf("OpenAI connection failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		return "success", nil
+	}
+	if resp.StatusCode == 401 {
+		return "invalid", errors.New("invalid API key")
+	}
+	return "error", fmt.Errorf("OpenAI API returned status %d", resp.StatusCode)
+}
+
+// testDeepSeek 测试 DeepSeek API 连接。
+func (s *ApiConfigService) testDeepSeek(cfg *model.ApiConfig) (string, error) {
+	if cfg.APIKey == "" {
+		return "error", errors.New("API key is required")
+	}
+
+	baseURL := cfg.BaseURL
+	if baseURL == "" {
+		baseURL = "https://api.deepseek.com"
+	}
+
+	testURL := baseURL + "/models"
+	req, err := http.NewRequest("GET", testURL, nil)
+	if err != nil {
+		return "error", err
+	}
+	req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
+
+	client := &http.Client{Timeout: 10 * time.Second}
+	resp, err := client.Do(req.WithContext(context.Background()))
+	if err != nil {
+		return "error", fmt.Errorf("DeepSeek connection failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		return "success", nil
+	}
+	if resp.StatusCode == 401 {
+		return "invalid", errors.New("invalid API key")
+	}
+	return "error", fmt.Errorf("DeepSeek API returned status %d", resp.StatusCode)
+}
+
+// testSiliconFlow 测试 SiliconFlow API 连接。
+func (s *ApiConfigService) testSiliconFlow(cfg *model.ApiConfig) (string, error) {
+	if cfg.APIKey == "" {
+		return "error", errors.New("API key is required")
+	}
+
+	baseURL := cfg.BaseURL
+	if baseURL == "" {
+		baseURL = "https://api.siliconflow.cn/v1"
+	}
+
+	testURL := baseURL + "/models"
+	req, err := http.NewRequest("GET", testURL, nil)
+	if err != nil {
+		return "error", err
+	}
+	req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
+
+	client := &http.Client{Timeout: 10 * time.Second}
+	resp, err := client.Do(req.WithContext(context.Background()))
+	if err != nil {
+		return "error", fmt.Errorf("SiliconFlow connection failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		return "success", nil
+	}
+	if resp.StatusCode == 401 {
+		return "invalid", errors.New("invalid API key")
+	}
+	return "error", fmt.Errorf("SiliconFlow API returned status %d", resp.StatusCode)
+}
diff --git a/internal/service/api_config_helpers.go b/internal/service/api_config_helpers.go
new file mode 100644
index 0000000..d0898f7
--- /dev/null
+++ b/internal/service/api_config_helpers.go
@@ -0,0 +1,104 @@
+package service
+
+import (
+	"context"
+	"net/url"
+	"strings"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+)
+
+// GetEffectiveConfig 获取生效的 API 配置（数据库配置优先于配置文件）。
+func (s *ApiConfigService) GetEffectiveConfig(ctx context.Context, provider string) (*model.ApiConfig, error) {
+	// 首先尝试从数据库获取
+	cfg, err := s.GetByProvider(ctx, provider)
+	if err == nil && cfg != nil {
+		return cfg, nil
+	}
+
+	// 如果数据库没有，尝试从配置文件获取
+	return s.getConfigFromFile(provider)
+}
+
+// getConfigFromFile 从配置文件获取 API 配置。
+func (s *ApiConfigService) getConfigFromFile(provider string) (*model.ApiConfig, error) {
+	var apiKey string
+	var hasKey bool
+
+	switch provider {
+	case "tmdb":
+		apiKey = s.cfg.Secrets.TMDbAPIKey
+		hasKey = apiKey != ""
+	case "bangumi":
+		apiKey = s.cfg.Secrets.BangumiToken
+		hasKey = apiKey != ""
+	case "thetvdb":
+		apiKey = s.cfg.Secrets.TheTVDBAPIKey
+		hasKey = apiKey != ""
+	case "fanart":
+		apiKey = s.cfg.Secrets.FanartAPIKey
+		hasKey = apiKey != ""
+	}
+
+	if !hasKey {
+		return nil, ErrApiConfigNotFound
+	}
+
+	return &model.ApiConfig{
+		Provider: provider,
+		APIKey:   apiKey,
+		Enabled:  true,
+	}, nil
+}
+
+// isValidProvider 检查提供者是否有效。
+func (s *ApiConfigService) isValidProvider(provider string) bool {
+	providers := model.PredefinedProviders()
+	for _, p := range providers {
+		if p.ID == provider {
+			return true
+		}
+	}
+	return false
+}
+
+// getProviderDescription 获取提供者描述。
+func (s *ApiConfigService) getProviderDescription(provider string) string {
+	providers := model.PredefinedProviders()
+	for _, p := range providers {
+		if p.ID == provider {
+			return p.Description
+		}
+	}
+	return ""
+}
+
+// UpdateTestResult 更新测试结果。
+func (s *ApiConfigService) UpdateTestResult(ctx context.Context, provider, result string) error {
+	return s.repo.ApiConfig.UpdateTestResult(ctx, provider, result)
+}
+
+// MaskAPIKey 遮蔽 API Key 的中间部分。
+func (s *ApiConfigService) MaskAPIKey(apiKey string) string {
+	if len(apiKey) <= 8 {
+		return "***"
+	}
+	return apiKey[:4] + "..." + apiKey[len(apiKey)-4:]
+}
+
+// ExtractBaseURL 从 URL 中提取域名。
+func ExtractBaseURL(rawURL string) string {
+	if rawURL == "" {
+		return ""
+	}
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		return rawURL
+	}
+	return u.Scheme + "://" + u.Host
+}
+
+// ProviderMatches 检查请求的提供者是否与配置的提供者匹配。
+func ProviderMatches(requested, configured string) bool {
+	return strings.EqualFold(requested, configured)
+}
diff --git a/internal/service/api_config_svc.go b/internal/service/api_config_svc.go
index 82b2c6f..8768454 100644
--- a/internal/service/api_config_svc.go
+++ b/internal/service/api_config_svc.go
@@ -4,11 +4,6 @@ package service
 import (
 	"context"
 	"errors"
-	"fmt"
-	"net/http"
-	"net/url"
-	"strings"
-	"time"
 
 	"go.uber.org/zap"
 
@@ -127,256 +122,3 @@ func (s *ApiConfigService) Update(ctx context.Context, provider string, apiKey,
 
 	return s.repo.ApiConfig.Update(ctx, cfg)
 }
-
-// TestConnection 测试 API 连接。
-func (s *ApiConfigService) TestConnection(ctx context.Context, provider string) (string, error) {
-	cfg, err := s.GetByProvider(ctx, provider)
-	if err != nil {
-		return "error", err
-	}
-
-	// 根据不同提供者执行不同的测试逻辑
-	switch provider {
-	case "tmdb":
-		return s.testTMDb(cfg)
-	case "openai":
-		return s.testOpenAI(cfg)
-	case "deepseek":
-		return s.testDeepSeek(cfg)
-	case "siliconflow":
-		return s.testSiliconFlow(cfg)
-	default:
-		return "unknown", fmt.Errorf("no test implemented for provider: %s", provider)
-	}
-}
-
-// testTMDb 测试 TMDb API 连接。
-func (s *ApiConfigService) testTMDb(cfg *model.ApiConfig) (string, error) {
-	if cfg.APIKey == "" {
-		return "error", errors.New("API key is required")
-	}
-
-	baseURL := strings.TrimRight(cfg.BaseURL, "/")
-	if baseURL == "" {
-		baseURL = strings.TrimRight(s.cfg.Secrets.TMDbAPIProxy, "/")
-	}
-	if baseURL == "" {
-		baseURL = "https://api.themoviedb.org/3"
-	}
-	testURL := baseURL + "/configuration?api_key=" + url.QueryEscape(cfg.APIKey)
-	req, err := http.NewRequestWithContext(context.Background(), http.MethodGet, testURL, nil)
-	if err != nil {
-		return "error", err
-	}
-	client := NewExternalHTTPClient(10 * time.Second)
-	resp, err := client.Do(req)
-	if err != nil {
-		return "error", fmt.Errorf("TMDb connection failed: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == 200 {
-		return "success", nil
-	}
-	if resp.StatusCode == 401 {
-		return "invalid", errors.New("invalid API key")
-	}
-	return "error", fmt.Errorf("TMDb API returned status %d", resp.StatusCode)
-}
-
-// testOpenAI 测试 OpenAI API 连接。
-func (s *ApiConfigService) testOpenAI(cfg *model.ApiConfig) (string, error) {
-	if cfg.APIKey == "" {
-		return "error", errors.New("API key is required")
-	}
-
-	baseURL := cfg.BaseURL
-	if baseURL == "" {
-		baseURL = "https://api.openai.com/v1"
-	}
-
-	testURL := baseURL + "/models"
-	req, err := http.NewRequest("GET", testURL, nil)
-	if err != nil {
-		return "error", err
-	}
-	req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
-
-	client := &http.Client{Timeout: 10 * time.Second}
-	resp, err := client.Do(req.WithContext(context.Background()))
-	if err != nil {
-		return "error", fmt.Errorf("OpenAI connection failed: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == 200 {
-		return "success", nil
-	}
-	if resp.StatusCode == 401 {
-		return "invalid", errors.New("invalid API key")
-	}
-	return "error", fmt.Errorf("OpenAI API returned status %d", resp.StatusCode)
-}
-
-// testDeepSeek 测试 DeepSeek API 连接。
-func (s *ApiConfigService) testDeepSeek(cfg *model.ApiConfig) (string, error) {
-	if cfg.APIKey == "" {
-		return "error", errors.New("API key is required")
-	}
-
-	baseURL := cfg.BaseURL
-	if baseURL == "" {
-		baseURL = "https://api.deepseek.com"
-	}
-
-	testURL := baseURL + "/models"
-	req, err := http.NewRequest("GET", testURL, nil)
-	if err != nil {
-		return "error", err
-	}
-	req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
-
-	client := &http.Client{Timeout: 10 * time.Second}
-	resp, err := client.Do(req.WithContext(context.Background()))
-	if err != nil {
-		return "error", fmt.Errorf("DeepSeek connection failed: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == 200 {
-		return "success", nil
-	}
-	if resp.StatusCode == 401 {
-		return "invalid", errors.New("invalid API key")
-	}
-	return "error", fmt.Errorf("DeepSeek API returned status %d", resp.StatusCode)
-}
-
-// testSiliconFlow 测试 SiliconFlow API 连接。
-func (s *ApiConfigService) testSiliconFlow(cfg *model.ApiConfig) (string, error) {
-	if cfg.APIKey == "" {
-		return "error", errors.New("API key is required")
-	}
-
-	baseURL := cfg.BaseURL
-	if baseURL == "" {
-		baseURL = "https://api.siliconflow.cn/v1"
-	}
-
-	testURL := baseURL + "/models"
-	req, err := http.NewRequest("GET", testURL, nil)
-	if err != nil {
-		return "error", err
-	}
-	req.Header.Set("Authorization", "Bearer "+cfg.APIKey)
-
-	client := &http.Client{Timeout: 10 * time.Second}
-	resp, err := client.Do(req.WithContext(context.Background()))
-	if err != nil {
-		return "error", fmt.Errorf("SiliconFlow connection failed: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode == 200 {
-		return "success", nil
-	}
-	if resp.StatusCode == 401 {
-		return "invalid", errors.New("invalid API key")
-	}
-	return "error", fmt.Errorf("SiliconFlow API returned status %d", resp.StatusCode)
-}
-
-// GetEffectiveConfig 获取生效的 API 配置（数据库配置优先于配置文件）。
-func (s *ApiConfigService) GetEffectiveConfig(ctx context.Context, provider string) (*model.ApiConfig, error) {
-	// 首先尝试从数据库获取
-	cfg, err := s.GetByProvider(ctx, provider)
-	if err == nil && cfg != nil {
-		return cfg, nil
-	}
-
-	// 如果数据库没有，尝试从配置文件获取
-	return s.getConfigFromFile(provider)
-}
-
-// getConfigFromFile 从配置文件获取 API 配置。
-func (s *ApiConfigService) getConfigFromFile(provider string) (*model.ApiConfig, error) {
-	var apiKey string
-	var hasKey bool
-
-	switch provider {
-	case "tmdb":
-		apiKey = s.cfg.Secrets.TMDbAPIKey
-		hasKey = apiKey != ""
-	case "bangumi":
-		apiKey = s.cfg.Secrets.BangumiToken
-		hasKey = apiKey != ""
-	case "thetvdb":
-		apiKey = s.cfg.Secrets.TheTVDBAPIKey
-		hasKey = apiKey != ""
-	case "fanart":
-		apiKey = s.cfg.Secrets.FanartAPIKey
-		hasKey = apiKey != ""
-	}
-
-	if !hasKey {
-		return nil, ErrApiConfigNotFound
-	}
-
-	return &model.ApiConfig{
-		Provider: provider,
-		APIKey:   apiKey,
-		Enabled:  true,
-	}, nil
-}
-
-// isValidProvider 检查提供者是否有效。
-func (s *ApiConfigService) isValidProvider(provider string) bool {
-	providers := model.PredefinedProviders()
-	for _, p := range providers {
-		if p.ID == provider {
-			return true
-		}
-	}
-	return false
-}
-
-// getProviderDescription 获取提供者描述。
-func (s *ApiConfigService) getProviderDescription(provider string) string {
-	providers := model.PredefinedProviders()
-	for _, p := range providers {
-		if p.ID == provider {
-			return p.Description
-		}
-	}
-	return ""
-}
-
-// UpdateTestResult 更新测试结果。
-func (s *ApiConfigService) UpdateTestResult(ctx context.Context, provider, result string) error {
-	return s.repo.ApiConfig.UpdateTestResult(ctx, provider, result)
-}
-
-// MaskAPIKey 遮蔽 API Key 的中间部分。
-func (s *ApiConfigService) MaskAPIKey(apiKey string) string {
-	if len(apiKey) <= 8 {
-		return "***"
-	}
-	return apiKey[:4] + "..." + apiKey[len(apiKey)-4:]
-}
-
-// ExtractBaseURL 从 URL 中提取域名。
-func ExtractBaseURL(rawURL string) string {
-	if rawURL == "" {
-		return ""
-	}
-	u, err := url.Parse(rawURL)
-	if err != nil {
-		return rawURL
-	}
-	return u.Scheme + "://" + u.Host
-}
-
-// ProviderMatches 检查请求的提供者是否与配置的提供者匹配。
-func ProviderMatches(requested, configured string) bool {
-	return strings.EqualFold(requested, configured)
-}