diff --git a/README.md b/README.md
index 86807d36..424d1369 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ docker compose up -d
 
 - Debian `apt` 使用腾讯云镜像
 - `npm` 使用 `npmmirror`
-- Playwright 浏览器下载在 `amd64` 下默认使用 `npmmirror`，其他架构回退官方源
+- Playwright 浏览器默认先尝试 `npmmirror`，失败后自动回退官方源
 - `uv` / `pip` 使用腾讯云 PyPI 镜像
 
 如果你的服务器网络环境不同，也可以在构建时覆盖：
diff --git a/deploy/docker/backend.Dockerfile b/deploy/docker/backend.Dockerfile
index b079549d..6f632771 100644
--- a/deploy/docker/backend.Dockerfile
+++ b/deploy/docker/backend.Dockerfile
@@ -4,7 +4,6 @@ ARG DEBIAN_MIRROR=mirrors.cloud.tencent.com
 ARG NPM_REGISTRY=https://registry.npmmirror.com
 ARG PLAYWRIGHT_DOWNLOAD_HOST=https://npmmirror.com/mirrors/playwright
 ARG UV_DEFAULT_INDEX=https://mirrors.cloud.tencent.com/pypi/simple
-ARG TARGETARCH
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
@@ -28,8 +27,10 @@ RUN curl -LsSf https://astral.sh/uv/install.sh | sh \
 COPY apps/backend/package.json apps/backend/package-lock.json ./
 RUN npm ci
 
-RUN if [ "${TARGETARCH}" = "amd64" ]; then \
-    PLAYWRIGHT_DOWNLOAD_HOST="${PLAYWRIGHT_DOWNLOAD_HOST}" npx playwright install --with-deps chromium; \
+RUN if [ -n "${PLAYWRIGHT_DOWNLOAD_HOST}" ]; then \
+    echo "Trying Playwright mirror: ${PLAYWRIGHT_DOWNLOAD_HOST}"; \
+    PLAYWRIGHT_DOWNLOAD_HOST="${PLAYWRIGHT_DOWNLOAD_HOST}" npx playwright install --with-deps chromium \
+    || (echo "Playwright mirror failed, falling back to official host" && npx playwright install --with-deps chromium); \
   else \
     npx playwright install --with-deps chromium; \
   fi
diff --git a/docs/服务器部署教程.md b/docs/服务器部署教程.md
index 38ac0818..bd06a7fd 100644
--- a/docs/服务器部署教程.md
+++ b/docs/服务器部署教程.md
@@ -78,7 +78,7 @@ docker compose up -d
 
 - Debian `apt`：腾讯云镜像
 - `npm`：`npmmirror`
-- Playwright：`amd64` 默认走 `npmmirror`，其他架构自动回退官方源
+- Playwright：默认先走 `npmmirror`，失败后自动回退官方源
 - `uv` / `pip`：腾讯云 PyPI 镜像
 
 如果你要切换成别的源，可以手动执行：