diff --git a/src/api/admin-audit.ts b/src/api/admin-audit.ts
index 663db29..7263dbb 100644
--- a/src/api/admin-audit.ts
+++ b/src/api/admin-audit.ts
@@ -1,10 +1,9 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type { AdminAuditLogListData } from "@/types/api/admin-audit";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminAuditLogs(params?: {
   page?: number;
diff --git a/src/api/admin-auth.ts b/src/api/admin-auth.ts
index de1e8e2..6439823 100644
--- a/src/api/admin-auth.ts
+++ b/src/api/admin-auth.ts
@@ -10,7 +10,6 @@ import type {
 } from "@/types/api/admin-auth";
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "@/api/paths";
 
 /** `GET /api/v1/admin/auth/captcha`（无需 Token） */
 export async function getAdminCaptcha(): Promise<AdminAuthCaptchaResponse | null> {
@@ -19,7 +18,7 @@ export async function getAdminCaptcha(): Promise<AdminAuthCaptchaResponse | null
   }
   try {
     return await publicAdminRequest<AdminAuthCaptchaResponse>({
-      url: `${API_V1_PREFIX}/admin/auth/captcha`,
+      url: `/admin/auth/captcha`,
       method: "GET",
     });
   } catch {
@@ -32,7 +31,7 @@ export async function postAdminLogin(
   body: AdminAuthLoginRequest,
 ): Promise<AdminAuthLoginResponse> {
   return publicAdminRequest<AdminAuthLoginResponse>({
-    url: `${API_V1_PREFIX}/admin/auth/login`,
+    url: `/admin/auth/login`,
     method: "POST",
     data: body,
   });
@@ -40,5 +39,5 @@ export async function postAdminLogin(
 
 /** `GET /api/v1/admin/auth/me`（需 Token） */
 export async function getAdminMe(): Promise<AdminAuthMeResponse> {
-  return adminRequest.get<AdminAuthMeResponse>(`${API_V1_PREFIX}/admin/auth/me`);
+  return adminRequest.get<AdminAuthMeResponse>(`/admin/auth/me`);
 }
diff --git a/src/api/admin-config.ts b/src/api/admin-config.ts
index 81f4c03..5407f8c 100644
--- a/src/api/admin-config.ts
+++ b/src/api/admin-config.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminPlayTypeRow,
@@ -11,7 +10,7 @@ import type {
   RiskCapVersionDetail,
 } from "@/types/api/admin-config";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 type ConfigVersionListParams = {
   status?: string;
diff --git a/src/api/admin-currencies.ts b/src/api/admin-currencies.ts
index 11c8bf2..f55e98d 100644
--- a/src/api/admin-currencies.ts
+++ b/src/api/admin-currencies.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminCurrencyCreatePayload,
@@ -10,7 +9,7 @@ import type {
   AdminCurrencyUpdatePayload,
 } from "@/types/api/admin-currency";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminCurrencies(): Promise<AdminCurrencyListData> {
   return adminRequest.get<AdminCurrencyListData>(`${A}/currencies`);
diff --git a/src/api/admin-dashboard.ts b/src/api/admin-dashboard.ts
index 1f1da52..a932269 100644
--- a/src/api/admin-dashboard.ts
+++ b/src/api/admin-dashboard.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type { AdminDashboardData } from "@/types/api/admin-dashboard";
 import type {
@@ -8,7 +7,7 @@ import type {
   AdminDashboardAnalyticsQuery,
 } from "@/types/api/admin-dashboard-analytics";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 /** 首页仪表盘聚合（大厅 + 当期财务/风控/异常转账等，按账号权限填充各块） */
 export async function getAdminDashboard(): Promise<AdminDashboardData> {
diff --git a/src/api/admin-draws.ts b/src/api/admin-draws.ts
index 3fd8a6e..e883b30 100644
--- a/src/api/admin-draws.ts
+++ b/src/api/admin-draws.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type { AdminDrawFinanceSummaryData } from "@/types/api/admin-draw-finance";
 import type {
@@ -16,7 +15,7 @@ import type {
   AdminDrawCreateResponse,
 } from "@/types/api/admin-draws";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export type AdminDrawListQuery = {
   page?: number;
diff --git a/src/api/admin-integration-sites.ts b/src/api/admin-integration-sites.ts
index bdd958b..b533767 100644
--- a/src/api/admin-integration-sites.ts
+++ b/src/api/admin-integration-sites.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminIntegrationSiteConnectivityResult,
@@ -12,7 +11,7 @@ import type {
   AdminIntegrationSiteWithSecrets,
 } from "@/types/api/admin-integration-site";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminIntegrationSites(): Promise<AdminIntegrationSiteListData> {
   return adminRequest.get<AdminIntegrationSiteListData>(`${A}/integration-sites`);
diff --git a/src/api/admin-jackpot.ts b/src/api/admin-jackpot.ts
index 3a05884..6d96db4 100644
--- a/src/api/admin-jackpot.ts
+++ b/src/api/admin-jackpot.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminJackpotContributionsData,
@@ -11,7 +10,7 @@ import type {
   AdminJackpotPoolRow,
 } from "@/types/api/admin-jackpot";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminJackpotPools(): Promise<AdminJackpotPoolsData> {
   return adminRequest.get<AdminJackpotPoolsData>(`${A}/jackpot/pools`);
diff --git a/src/api/admin-ping.ts b/src/api/admin-ping.ts
index 2f164d5..1e7fc31 100644
--- a/src/api/admin-ping.ts
+++ b/src/api/admin-ping.ts
@@ -1,7 +1,6 @@
 import { adminRequest, hasLotteryAdminApiBaseUrl } from "@/lib/admin-http";
 import type { AdminPingResponse } from "@/types/api/admin-ping";
 
-import { API_V1_PREFIX } from "@/api/paths";
 
 /** `GET /api/v1/admin/ping`（需 Bearer Token） */
 export async function getAdminPing(): Promise<AdminPingResponse | null> {
@@ -10,7 +9,7 @@ export async function getAdminPing(): Promise<AdminPingResponse | null> {
   }
   try {
     return await adminRequest.get<AdminPingResponse>(
-      `${API_V1_PREFIX}/admin/ping`,
+      `/admin/ping`,
     );
   } catch {
     return null;
diff --git a/src/api/admin-player-tickets.ts b/src/api/admin-player-tickets.ts
index c01a07c..1a5e7ae 100644
--- a/src/api/admin-player-tickets.ts
+++ b/src/api/admin-player-tickets.ts
@@ -1,10 +1,9 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type { AdminPlayerTicketItemsData } from "@/types/api/admin-player-tickets";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminPlayerTicketItems(
   playerId: number,
diff --git a/src/api/admin-player.ts b/src/api/admin-player.ts
index 4a33031..ab63791 100644
--- a/src/api/admin-player.ts
+++ b/src/api/admin-player.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminPlayerListData,
@@ -10,7 +9,7 @@ import type {
   AdminPlayerDeleteResult,
 } from "@/types/api/admin-player";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminPlayers(params?: {
   page?: number;
diff --git a/src/api/admin-reconcile.ts b/src/api/admin-reconcile.ts
index 6d1e762..3789814 100644
--- a/src/api/admin-reconcile.ts
+++ b/src/api/admin-reconcile.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminReconcileItemsData,
@@ -8,7 +7,7 @@ import type {
   AdminReconcileJobListData,
 } from "@/types/api/admin-reconcile";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminReconcileJobs(params?: {
   page?: number;
diff --git a/src/api/admin-report-jobs.ts b/src/api/admin-report-jobs.ts
index f5eec2c..f54316e 100644
--- a/src/api/admin-report-jobs.ts
+++ b/src/api/admin-report-jobs.ts
@@ -2,7 +2,6 @@ import { adminHttp, adminRequest } from "@/lib/admin-http";
 import { withAdminAuthHeader } from "@/lib/admin-auth";
 import { withAdminLocaleHeaders } from "@/lib/admin-locale";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminReportJobCreatePayload,
@@ -11,7 +10,7 @@ import type {
   AdminReportJobRow,
 } from "@/types/api/admin-report-jobs";
 
-const A = `${API_V1_PREFIX}/admin/report-jobs`;
+const A = `/admin/report-jobs`;
 
 export async function getAdminReportJobs(params?: {
   page?: number;
diff --git a/src/api/admin-reports.ts b/src/api/admin-reports.ts
index 1508782..ce83a69 100644
--- a/src/api/admin-reports.ts
+++ b/src/api/admin-reports.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminReportDailyProfitRow,
@@ -11,7 +10,7 @@ import type {
   AdminReportRebateCommissionRow,
 } from "@/types/api/admin-reports";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminReportDailyProfit(
   params: AdminReportQueryParams,
diff --git a/src/api/admin-risk.ts b/src/api/admin-risk.ts
index 5afb391..e506e88 100644
--- a/src/api/admin-risk.ts
+++ b/src/api/admin-risk.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminRiskLockLogListData,
@@ -9,7 +8,7 @@ import type {
   AdminRiskPoolShowData,
 } from "@/types/api/admin-risk";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export type AdminRiskPoolListQuery = {
   page?: number;
diff --git a/src/api/admin-settings.ts b/src/api/admin-settings.ts
index 562a8eb..36f9ccd 100644
--- a/src/api/admin-settings.ts
+++ b/src/api/admin-settings.ts
@@ -1,7 +1,6 @@
 import { adminRequest } from "@/lib/admin-http";
-import { API_V1_PREFIX } from "@/api/paths";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export type AdminSettingItem = {
   key: string;
diff --git a/src/api/admin-settlement.ts b/src/api/admin-settlement.ts
index a6fde4a..8afab8d 100644
--- a/src/api/admin-settlement.ts
+++ b/src/api/admin-settlement.ts
@@ -2,7 +2,6 @@ import { adminHttp, adminRequest } from "@/lib/admin-http";
 import { withAdminAuthHeader } from "@/lib/admin-auth";
 import { withAdminLocaleHeaders } from "@/lib/admin-locale";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminSettlementBatchDetailsData,
@@ -12,7 +11,7 @@ import type {
   AdminSettlementWorkflowResponse,
 } from "@/types/api/admin-settlement";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export type AdminSettlementBatchListQuery = {
   page?: number;
diff --git a/src/api/admin-tickets.ts b/src/api/admin-tickets.ts
index c6c426c..c02f65b 100644
--- a/src/api/admin-tickets.ts
+++ b/src/api/admin-tickets.ts
@@ -1,10 +1,9 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type { AdminTicketItemsData } from "@/types/api/admin-tickets";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export type TicketItemsListQuery = {
   page?: number;
diff --git a/src/api/admin-users.ts b/src/api/admin-users.ts
index 6fe26bf..6a60c42 100644
--- a/src/api/admin-users.ts
+++ b/src/api/admin-users.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminPermissionCatalogData,
@@ -18,7 +17,7 @@ import type {
   AdminUserUpdatePayload,
 } from "@/types/api/admin-user";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export async function getAdminUsers(params?: {
   page?: number;
diff --git a/src/api/admin-wallet.ts b/src/api/admin-wallet.ts
index cad492b..1d66103 100644
--- a/src/api/admin-wallet.ts
+++ b/src/api/admin-wallet.ts
@@ -1,6 +1,5 @@
 import { adminRequest } from "@/lib/admin-http";
 
-import { API_V1_PREFIX } from "./paths";
 
 import type {
   AdminPlayerWalletsData,
@@ -8,7 +7,7 @@ import type {
   AdminWalletTxnListData,
 } from "@/types/api/admin-wallet";
 
-const A = `${API_V1_PREFIX}/admin`;
+const A = `/admin`;
 
 export type TransferOrderListQuery = {
   page?: number;
diff --git a/src/api/index.ts b/src/api/index.ts
index f87fe1e..5768684 100644
--- a/src/api/index.ts
+++ b/src/api/index.ts
@@ -1,4 +1,4 @@
-export { API_V1_PREFIX } from "@/api/paths";
+export { ADMIN_API_BASE, LOTTERY_API_V1_BASE } from "@/api/paths";
 export { getDrawCurrent } from "@/api/public-draw";
 export { getAdminRiskPools } from "@/api/admin-risk";
 export { getAdminCaptcha, getAdminMe, postAdminLogin } from "@/api/admin-auth";
diff --git a/src/api/paths.ts b/src/api/paths.ts
index fd23d1a..8f45dc1 100644
--- a/src/api/paths.ts
+++ b/src/api/paths.ts
@@ -1,2 +1,5 @@
-/** Laravel `routes/api.php`：`api` 前缀 + `v1` 分组 */
-export const API_V1_PREFIX = "/api/v1";
+/** Laravel `routes/api.php`：`api` 前缀 + `v1` 分组；与 {@link adminHttp} `baseURL` 一致。 */
+export const LOTTERY_API_V1_BASE = "/api/v1";
+
+/** 后台路由在 `v1` 下的 `admin` 分组 */
+export const ADMIN_API_BASE = "/admin";
diff --git a/src/api/public-draw.ts b/src/api/public-draw.ts
index 6bc40c4..5e17650 100644
--- a/src/api/public-draw.ts
+++ b/src/api/public-draw.ts
@@ -1,7 +1,6 @@
 import { hasLotteryAdminApiBaseUrl, publicAdminRequest } from "@/lib/admin-http";
 import type { DrawCurrentSnapshot } from "@/types/api/public-draw";
 
-import { API_V1_PREFIX } from "@/api/paths";
 
 /** 大厅当前期（无需 Bearer） */
 export async function getDrawCurrent(): Promise<DrawCurrentSnapshot | null> {
@@ -10,7 +9,7 @@ export async function getDrawCurrent(): Promise<DrawCurrentSnapshot | null> {
   }
   try {
     return await publicAdminRequest<DrawCurrentSnapshot | null>({
-      url: `${API_V1_PREFIX}/draw/current`,
+      url: `/draw/current`,
       method: "GET",
     });
   } catch {
diff --git a/src/lib/admin-http.ts b/src/lib/admin-http.ts
index 1f13058..521eb20 100644
--- a/src/lib/admin-http.ts
+++ b/src/lib/admin-http.ts
@@ -8,11 +8,12 @@ import { withAdminAuthHeader } from "@/lib/admin-auth";
 import { withAdminLocaleHeaders } from "@/lib/admin-locale";
 import { LotteryApiBizError, LotteryApiEnvelopeError } from "@/types/api/errors";
 import { isApiEnvelope } from "@/types/api/envelope";
+import { LOTTERY_API_V1_BASE } from "@/api/paths";
 
 export { hasLotteryAdminApiBaseUrl } from "@/lib/lottery-api-env";
 
 export const adminHttp = axios.create({
-  // API 路径统一由调用方传 `/api/v1/...`，避免与前缀重复拼接成 `/api/api/v1/...`。
+  baseURL: LOTTERY_API_V1_BASE,
   timeout: 30_000,
   headers: { Accept: "application/json" },
 });