diff --git a/src/controllers/admin.ts b/src/controllers/admin.ts
index 973fc46..7a4bcf0 100644
--- a/src/controllers/admin.ts
+++ b/src/controllers/admin.ts
@@ -4,6 +4,7 @@ import config from '../config';
 import { repositoryReviewPromptRepo } from '../db/repositories/repository-review-prompt-repo';
 import { reviewEngine } from '../review/engine';
 import { giteaService } from '../services/gitea';
+import { toErrorLogMeta } from '../utils/error-log';
 import { logger } from '../utils/logger';
 
 const publicRoutes = new Hono();
@@ -31,17 +32,55 @@ publicRoutes.post('/login', async (c) => {
 
 // 获取仓库列表及 Webhook 状态
 protectedRoutes.get('/repositories', async (c) => {
+  const page = Number.parseInt(c.req.query('page') || '1', 10);
+  const query = c.req.query('q');
+  const limit = 30; // 每页数量固定，或也可从查询参数获取
+  const requestContext = {
+    page,
+    limit,
+    query: query ?? null,
+    requestUrl: c.req.url,
+    method: c.req.method,
+    runtime: process.versions.bun ? `bun-${process.versions.bun}` : process.version,
+    nodeEnv: process.env.NODE_ENV ?? null,
+    databasePath: process.env.DATABASE_PATH || './data/assistant.db',
+  };
+
   try {
-    const page = Number.parseInt(c.req.query('page') || '1', 10);
-    const query = c.req.query('q');
-    const limit = 30; // 每页数量固定，或也可从查询参数获取
+    logger.debug('开始获取仓库列表', requestContext);
 
     const { repos, totalCount } = await giteaService.listAllRepositories(page, limit, query);
+    logger.debug('仓库搜索接口返回成功', {
+      ...requestContext,
+      reposCount: repos.length,
+      totalCount,
+      sampleRepos: repos
+        .slice(0, 3)
+        .map((repo) => (typeof repo.full_name === 'string' ? repo.full_name : null)),
+    });
+
     const webhookUrl = c.req.url.replace(/\/admin\/api\/repositories.*$/, '/webhook/gitea');
     const fullNames = repos
       .map((repo) => (typeof repo.full_name === 'string' ? repo.full_name : null))
       .filter((name): name is string => name !== null);
-    const promptMap = repositoryReviewPromptRepo.listProjectPrompts(fullNames);
+    logger.debug('准备批量读取项目级提示词', {
+      ...requestContext,
+      fullNamesCount: fullNames.length,
+      fullNamesSample: fullNames.slice(0, 5),
+    });
+
+    let promptMap: Record<string, string>;
+    try {
+      promptMap = repositoryReviewPromptRepo.listProjectPrompts(fullNames);
+    } catch (error: unknown) {
+      logger.error('批量读取项目级提示词失败', {
+        ...requestContext,
+        fullNamesCount: fullNames.length,
+        fullNamesSample: fullNames.slice(0, 5),
+        error: toErrorLogMeta(error),
+      });
+      throw error;
+    }
 
     const reposWithStatus = await Promise.all(
       repos.map(async (repo) => {
@@ -70,9 +109,13 @@ protectedRoutes.get('/repositories', async (c) => {
       page,
       limit,
     });
-  } catch (error: any) {
-    logger.error('获取仓库列表失败:', error);
-    return c.json({ message: 'Failed to fetch repositories', error: error.message }, 500);
+  } catch (error: unknown) {
+    const errorMessage = error instanceof Error ? error.message : String(error);
+    logger.error('获取仓库列表失败:', {
+      ...requestContext,
+      error: toErrorLogMeta(error),
+    });
+    return c.json({ message: 'Failed to fetch repositories', error: errorMessage }, 500);
   }
 });
 
diff --git a/src/services/gitea.ts b/src/services/gitea.ts
index 3fbbd7b..fe968ea 100644
--- a/src/services/gitea.ts
+++ b/src/services/gitea.ts
@@ -1,5 +1,6 @@
 import axios from 'axios';
 import config from '../config';
+import { toErrorLogMeta } from '../utils/error-log';
 import { logger } from '../utils/logger';
 
 export interface LineComment {
@@ -32,6 +33,35 @@ giteaAdminClient.interceptors.request.use((req) => {
   return req;
 });
 
+function getErrorMessage(error: unknown): string {
+  return error instanceof Error ? error.message : String(error);
+}
+
+function getResponseDataPreview(data: unknown): unknown {
+  if (typeof data === 'string') {
+    return data.length > 1000 ? `${data.slice(0, 1000)}...(truncated)` : data;
+  }
+  return data;
+}
+
+function getAxiosErrorMeta(error: unknown): Record<string, unknown> | null {
+  if (!axios.isAxiosError(error)) {
+    return null;
+  }
+
+  return {
+    code: error.code ?? null,
+    status: error.response?.status ?? null,
+    statusText: error.response?.statusText ?? null,
+    method: error.config?.method ?? null,
+    baseURL: error.config?.baseURL ?? null,
+    url: error.config?.url ?? null,
+    params: error.config?.params ?? null,
+    responseHeaders: error.response?.headers ?? null,
+    responseDataPreview: getResponseDataPreview(error.response?.data),
+  };
+}
+
 // Gitea服务接口定义
 export interface GiteaService {
   // 获取PR的文件差异
@@ -382,7 +412,19 @@ export const giteaService: GiteaService = {
     limit = 30,
     query?: string
   ): Promise<{ repos: any[]; totalCount: number }> {
+    const requestContext = {
+      page,
+      limit,
+      query: query ?? null,
+      apiUrl: config.gitea.apiUrl,
+      hasAdminToken: Boolean(config.admin.giteaAdminToken),
+      hasAccessToken: Boolean(config.gitea.accessToken),
+      runtime: process.versions.bun ? `bun-${process.versions.bun}` : process.version,
+      nodeEnv: process.env.NODE_ENV ?? null,
+    };
+
     try {
+      logger.debug('开始请求 Gitea 仓库搜索接口', requestContext);
       const response = await giteaAdminClient.get('/repos/search', {
         params: {
           page,
@@ -390,11 +432,51 @@ export const giteaService: GiteaService = {
           q: query,
         },
       });
+
+      logger.debug('Gitea 仓库搜索接口返回成功', {
+        ...requestContext,
+        status: response.status,
+        contentType: response.headers['content-type'] ?? null,
+        dataCount: Array.isArray(response.data?.data) ? response.data.data.length : null,
+        headerTotalCount: response.headers['x-total-count'] ?? null,
+      });
+
       const totalCount = Number.parseInt(response.headers['x-total-count'] || '0', 10);
       return { repos: response.data.data, totalCount };
-    } catch (error: any) {
-      logger.error('获取所有仓库列表失败:', error);
-      throw new Error(`获取所有仓库列表失败: ${error.message}`);
+    } catch (error: unknown) {
+      let rawResponseProbe: Record<string, unknown> | null = null;
+
+      try {
+        const probeResponse = await giteaAdminClient.get('/repos/search', {
+          params: {
+            page,
+            limit,
+            q: query,
+          },
+          responseType: 'text',
+          transformResponse: [(data) => data],
+        });
+
+        rawResponseProbe = {
+          status: probeResponse.status,
+          contentType: probeResponse.headers['content-type'] ?? null,
+          bodyLength: typeof probeResponse.data === 'string' ? probeResponse.data.length : null,
+          bodyPreview: getResponseDataPreview(probeResponse.data),
+        };
+      } catch (probeError: unknown) {
+        rawResponseProbe = {
+          probeError: toErrorLogMeta(probeError),
+        };
+      }
+
+      logger.error('获取所有仓库列表失败:', {
+        ...requestContext,
+        error: toErrorLogMeta(error),
+        axiosError: getAxiosErrorMeta(error),
+        rawResponseProbe,
+      });
+
+      throw new Error(`获取所有仓库列表失败: ${getErrorMessage(error)}`);
     }
   },
 
diff --git a/src/utils/error-log.ts b/src/utils/error-log.ts
new file mode 100644
index 0000000..95ed0aa
--- /dev/null
+++ b/src/utils/error-log.ts
@@ -0,0 +1,30 @@
+type UnknownRecord = Record<string, unknown>;
+
+function toUnknownRecord(value: unknown): UnknownRecord {
+  if (typeof value === 'object' && value !== null) {
+    return value as UnknownRecord;
+  }
+  return { value };
+}
+
+export function toErrorLogMeta(error: unknown): UnknownRecord {
+  if (error instanceof Error) {
+    const base: UnknownRecord = {
+      name: error.name,
+      message: error.message,
+      stack: error.stack,
+    };
+
+    const ownProps = Object.getOwnPropertyNames(error);
+    for (const prop of ownProps) {
+      if (prop in base) {
+        continue;
+      }
+      base[prop] = (error as unknown as UnknownRecord)[prop];
+    }
+
+    return base;
+  }
+
+  return toUnknownRecord(error);
+}