diff --git a/.gitignore b/.gitignore
index 053df37..752a6bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,10 @@
 
 # ===== Go =====
 server/server
+server/server-*
 server/tmp/
+server/bin/
+server/cmd/test-*/
 *.exe
 *.exe~
 *.dll
diff --git a/apps/web/src/app/platform/providers/page.tsx b/apps/web/src/app/platform/providers/page.tsx
index d9ac792..1d55de0 100644
--- a/apps/web/src/app/platform/providers/page.tsx
+++ b/apps/web/src/app/platform/providers/page.tsx
@@ -26,7 +26,7 @@ import {
   AlertDialogTitle,
 } from "@/components/ui/alert-dialog";
 import { toast } from "sonner";
-import { Plus, Pencil, Power, Trash2, Cpu, CheckCircle2, XCircle } from "lucide-react";
+import { Plus, Pencil, Power, Trash2, Cpu, CheckCircle2, XCircle, Wifi } from "lucide-react";
 import { Pagination } from "@/components/ui/pagination";
 
 interface ProviderForm {
@@ -55,6 +55,7 @@ export default function PlatformProvidersPage() {
   const [editing, setEditing] = useState<ProviderForm | null>(null);
   const [deleteTarget, setDeleteTarget] = useState<ModelProvider | null>(null);
   const [page, setPage] = useState(1);
+  const [testingId, setTestingId] = useState<string | null>(null);
 
   const { data: providers } = useQuery({
     queryKey: ["platformProviders"],
@@ -126,6 +127,31 @@ export default function PlatformProvidersPage() {
     onError: (e: Error) => toast.error(e.message),
   });
 
+  const testConnection = useMutation({
+    mutationFn: (id: string) => api.post(`/api/v1/platform/providers/${id}/test`),
+    onSuccess: (data: any) => {
+      if (data.success) {
+        toast.success("连接测试成功", {
+          description: data.response || "Provider 响应正常",
+        });
+      } else {
+        toast.error("连接测试失败", {
+          description: data.message || "未知错误",
+        });
+      }
+      setTestingId(null);
+    },
+    onError: (e: Error) => {
+      toast.error("连接测试失败", { description: e.message });
+      setTestingId(null);
+    },
+  });
+
+  const handleTest = (id: string) => {
+    setTestingId(id);
+    testConnection.mutate(id);
+  };
+
   const handleSubmit = () => {
     if (!editing) return;
     if (!editing.name || !editing.base_url) {
@@ -222,6 +248,16 @@ export default function PlatformProvidersPage() {
               >
                 <Pencil className="h-3 w-3" /> 编辑
               </Button>
+              <Button
+                size="sm"
+                variant="ghost"
+                className="h-7 gap-1 text-xs"
+                onClick={() => handleTest(p.id)}
+                disabled={testingId === p.id}
+              >
+                <Wifi className="h-3 w-3" />
+                {testingId === p.id ? "测试中..." : "测试连接"}
+              </Button>
               <Button
                 size="sm"
                 variant="ghost"
diff --git a/server/cmd/server/router.go b/server/cmd/server/router.go
index fcba1b9..a901508 100644
--- a/server/cmd/server/router.go
+++ b/server/cmd/server/router.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -42,14 +43,20 @@ func newRouter(cfg *config.Config, pool *pgxpool.Pool, rdb *redis.Client) http.H
 
 	// LLM Manager — direct model calls replacing Dify for chat
 	llmMgr := llm.NewManager()
-	if cfg.LLM.OpenAIKey != "" {
-		llmMgr.Register("openai", llm.NewOpenAIProvider(cfg.LLM.OpenAIKey, cfg.LLM.OpenAIBaseURL, cfg.LLM.OpenAIModel))
-	}
-	if cfg.LLM.AnthropicKey != "" {
-		llmMgr.Register("anthropic", llm.NewAnthropicProvider(cfg.LLM.AnthropicKey, cfg.LLM.AnthropicBaseURL, cfg.LLM.AnthropicModel))
-	}
-	if cfg.LLM.Provider != "" {
-		llmMgr.SetFallback(cfg.LLM.Provider)
+	llmMgr.SetPool(pool)
+	
+	// 优先从数据库加载 providers（如果失败，回退到环境变量配置）
+	if err := llmMgr.LoadProvidersFromDB(context.Background()); err != nil {
+		// 回退：使用环境变量配置
+		if cfg.LLM.OpenAIKey != "" {
+			llmMgr.Register("openai", llm.NewOpenAIProvider(cfg.LLM.OpenAIKey, cfg.LLM.OpenAIBaseURL, cfg.LLM.OpenAIModel))
+		}
+		if cfg.LLM.AnthropicKey != "" {
+			llmMgr.Register("anthropic", llm.NewAnthropicProvider(cfg.LLM.AnthropicKey, cfg.LLM.AnthropicBaseURL, cfg.LLM.AnthropicModel))
+		}
+		if cfg.LLM.Provider != "" {
+			llmMgr.SetFallback(cfg.LLM.Provider)
+		}
 	}
 
 	// Embedding client（向量化服务，支持 DashScope / OpenAI 兼容 API）
@@ -229,6 +236,7 @@ func newRouter(cfg *config.Config, pool *pgxpool.Pool, rdb *redis.Client) http.H
 			// 模型提供商
 			r.Get("/providers", platformH.ListProviders)
 			r.Post("/providers", platformH.CreateProvider)
+			r.Post("/providers/{id}/test", platformH.TestProvider)
 			r.Put("/providers/{id}", platformH.UpdateProvider)
 			r.Delete("/providers/{id}", platformH.DeleteProvider)
 
diff --git a/server/internal/handler/platform.go b/server/internal/handler/platform.go
index 878e5e8..6dddc0b 100644
--- a/server/internal/handler/platform.go
+++ b/server/internal/handler/platform.go
@@ -8,11 +8,13 @@ package handler
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"net/http"
 	"strconv"
 	"time"
 
 	"github.com/enterprise-ai-platform/server/internal/response"
+	"github.com/enterprise-ai-platform/server/pkg/llm"
 	"github.com/go-chi/chi/v5"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
@@ -96,9 +98,9 @@ func (h *PlatformHandler) OrgRanking(w http.ResponseWriter, r *http.Request) {
 	items := []map[string]any{}
 	for rows.Next() {
 		var (
-			id, name, short      string
-			users, apps          int
-			conversations, toks  int64
+			id, name, short     string
+			users, apps         int
+			conversations, toks int64
 		)
 		if err := rows.Scan(&id, &name, &short, &users, &apps, &conversations, &toks); err != nil {
 			continue
@@ -295,12 +297,12 @@ func (h *PlatformHandler) ListAllUsers(w http.ResponseWriter, r *http.Request) {
 	items := []map[string]any{}
 	for rows.Next() {
 		var (
-			id, name, email, role, status      string
-			avatarURL, employeeID              *string
-			lastLoginAt                        *time.Time
-			loginCount                         int
-			createdAt                          time.Time
-			orgID, orgName, orgShort           string
+			id, name, email, role, status string
+			avatarURL, employeeID         *string
+			lastLoginAt                   *time.Time
+			loginCount                    int
+			createdAt                     time.Time
+			orgID, orgName, orgShort      string
 		)
 		if err := rows.Scan(&id, &name, &email, &avatarURL, &role, &status, &employeeID, &lastLoginAt, &loginCount, &createdAt, &orgID, &orgName, &orgShort); err != nil {
 			continue
@@ -439,14 +441,14 @@ func (h *PlatformHandler) ListAllApps(w http.ResponseWriter, r *http.Request) {
 	items := []map[string]any{}
 	for rows.Next() {
 		var (
-			id, name, slug, status, visibility   string
-			desc, iconURL                        *string
-			appType                              *string
-			usageCount                           int64
-			isFeatured                           bool
-			createdAt                            time.Time
-			catName, creatorName                 string
-			orgID, orgName, orgShort             string
+			id, name, slug, status, visibility string
+			desc, iconURL                      *string
+			appType                            *string
+			usageCount                         int64
+			isFeatured                         bool
+			createdAt                          time.Time
+			catName, creatorName               string
+			orgID, orgName, orgShort           string
 		)
 		if err := rows.Scan(&id, &name, &slug, &desc, &iconURL, &appType, &status, &visibility,
 			&usageCount, &isFeatured, &createdAt, &catName, &creatorName, &orgID, &orgName, &orgShort); err != nil {
@@ -646,12 +648,12 @@ func (h *PlatformHandler) CreateProvider(w http.ResponseWriter, r *http.Request)
 func (h *PlatformHandler) UpdateProvider(w http.ResponseWriter, r *http.Request) {
 	id := chi.URLParam(r, "id")
 	var req struct {
-		Name     *string          `json:"name"`
-		BaseURL  *string          `json:"base_url"`
-		APIKey   *string          `json:"api_key"`
-		Models   json.RawMessage  `json:"models"`
-		IsActive *bool            `json:"is_active"`
-		Priority *int             `json:"priority"`
+		Name     *string         `json:"name"`
+		BaseURL  *string         `json:"base_url"`
+		APIKey   *string         `json:"api_key"`
+		Models   json.RawMessage `json:"models"`
+		IsActive *bool           `json:"is_active"`
+		Priority *int            `json:"priority"`
 	}
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
 		response.BadRequest(w, "无效的请求格式")
@@ -696,6 +698,92 @@ func (h *PlatformHandler) DeleteProvider(w http.ResponseWriter, r *http.Request)
 	response.JSON(w, http.StatusOK, map[string]string{"message": "已删除"})
 }
 
+func (h *PlatformHandler) TestProvider(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+
+	// 查询 provider 配置
+	var baseURL, apiKey string
+	var modelsJSON, configJSON []byte
+	err := h.pool.QueryRow(r.Context(), `
+		SELECT base_url, api_key_encrypted, models, config
+		FROM model_providers
+		WHERE id = $1
+	`, id).Scan(&baseURL, &apiKey, &modelsJSON, &configJSON)
+	if err != nil {
+		response.BadRequest(w, "provider 不存在")
+		return
+	}
+
+	var config map[string]any
+	if err := json.Unmarshal(configJSON, &config); err != nil {
+		response.InternalError(w, "配置解析失败")
+		return
+	}
+
+	providerType, _ := config["provider"].(string)
+	if providerType == "" {
+		providerType = "openai"
+	}
+
+	// 选择测试模型：优先 config.default_model，其次取 models 列的第一个模型
+	// 兼容两种模型项结构：seed 数据用 "id" 字段，前端表单用 "name" 字段作为模型标识
+	var testModel string
+	if dm, ok := config["default_model"].(string); ok && dm != "" {
+		testModel = dm
+	}
+	if testModel == "" {
+		var modelList []map[string]any
+		if err := json.Unmarshal(modelsJSON, &modelList); err == nil && len(modelList) > 0 {
+			if v, ok := modelList[0]["id"].(string); ok && v != "" {
+				testModel = v
+			} else if v, ok := modelList[0]["name"].(string); ok && v != "" {
+				testModel = v
+			}
+		}
+	}
+	if testModel == "" {
+		testModel = "gpt-3.5-turbo" // fallback
+	}
+
+	// 创建临时 provider 进行测试（注意：构造函数签名为 apiKey, baseURL, model，顺序不可颠倒）
+	var provider llm.Provider
+	switch providerType {
+	case "openai":
+		provider = llm.NewOpenAIProvider(apiKey, baseURL, "")
+	case "anthropic":
+		provider = llm.NewAnthropicProvider(apiKey, baseURL, "")
+	default:
+		response.BadRequest(w, "不支持的 provider 类型")
+		return
+	}
+
+	// 发送测试请求
+	testReq := &llm.ChatRequest{
+		Model: testModel,
+		Messages: []llm.Message{
+			{Role: "user", Content: "请回复：测试成功"},
+		},
+		MaxTokens:   20,
+		Temperature: 0.1,
+		Stream:      false,
+	}
+
+	result, err := provider.ChatCompletion(r.Context(), testReq)
+	if err != nil {
+		response.JSON(w, http.StatusOK, map[string]any{
+			"success": false,
+			"message": fmt.Sprintf("连接失败: %v", err),
+		})
+		return
+	}
+
+	response.JSON(w, http.StatusOK, map[string]any{
+		"success":  true,
+		"message":  "连接成功",
+		"response": result.Content,
+	})
+}
+
 // ==================== 全局配额管理 ====================
 
 func (h *PlatformHandler) ListQuotas(w http.ResponseWriter, r *http.Request) {
@@ -722,14 +810,14 @@ func (h *PlatformHandler) ListQuotas(w http.ResponseWriter, r *http.Request) {
 	items := []map[string]any{}
 	for rows.Next() {
 		var (
-			id, targetType                                 string
-			targetID                                       *string
-			modelName                                      *string
-			dailyTokens, monthlyTokens                     *int64
-			dailyReqs                                      *int
-			isActive                                       bool
-			createdAt                                      time.Time
-			targetName                                     string
+			id, targetType             string
+			targetID                   *string
+			modelName                  *string
+			dailyTokens, monthlyTokens *int64
+			dailyReqs                  *int
+			isActive                   bool
+			createdAt                  time.Time
+			targetName                 string
 		)
 		if err := rows.Scan(&id, &targetType, &targetID, &modelName, &dailyTokens, &monthlyTokens,
 			&dailyReqs, &isActive, &createdAt, &targetName); err != nil {