diff --git a/README.md b/README.md
index 34555dda..9dbe9264 100644
--- a/README.md
+++ b/README.md
@@ -246,6 +246,9 @@ curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- u
 
 # Aliyun mirror (recommended for users in China)
 curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- up --aliyun --public-url https://skillhub.your-company.com --version latest
+
+# Sub-path deployment behind a reverse proxy
+curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- up --public-url https://skillhub.your-company.com/skillhub --base-path /skillhub/
 ```
 
 **Deployment parameters:**
@@ -253,6 +256,7 @@ curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- u
 | Parameter | Description | Example |
 |-----------|-------------|---------|
 | `--public-url <url>` | Public access URL (recommended) | `--public-url https://skill.example.com` |
+| `--base-path <path>` | Serve the Web UI under a reverse-proxy sub-path. Also sets same-origin API routing for that path. | `--base-path /skillhub/` |
 | `--version <tag>` | Specific image tag | `--version v0.2.0` |
 | `--aliyun` | Use Aliyun mirror (China) | `--aliyun` |
 | `--home <dir>` | Runtime directory | `--home /opt/skillhub` |
@@ -260,6 +264,12 @@ curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- u
 
 > **Important**: Configure `--public-url` for production deployments to ensure CLI install commands and Agent setup instructions display the correct URLs.
 
+For sub-path deployments, keep the public URL and base path aligned. For example,
+`--public-url https://skill.example.com/skillhub --base-path /skillhub/` writes
+`SKILLHUB_PUBLIC_BASE_URL=https://skill.example.com/skillhub`,
+`SKILLHUB_WEB_BASE_PATH=/skillhub/`, and `SKILLHUB_WEB_API_BASE_URL=/skillhub`
+into the runtime environment.
+
 **Manual deployment:**
 
 1. Copy the runtime environment template.
@@ -308,6 +318,9 @@ enables the bootstrap admin by default, so zero-config quickstart via
 Recommended production baseline:
 
 - set `SKILLHUB_PUBLIC_BASE_URL` to the final HTTPS entrypoint
+- if the service is published under a sub-path such as `/skillhub/`, set
+  `SKILLHUB_WEB_BASE_PATH=/skillhub/` and `SKILLHUB_WEB_API_BASE_URL=/skillhub`
+  as well, or use `runtime.sh --base-path /skillhub/`
 - keep PostgreSQL / Redis bound to `127.0.0.1`
 - use external S3 / OSS via `SKILLHUB_STORAGE_S3_*`
 - change `BOOTSTRAP_ADMIN_PASSWORD` to a strong password (`validate-release-config.sh` rejects the default `ChangeMe!2026`)
diff --git a/README_zh.md b/README_zh.md
index c8132525..e7eb5787 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -235,6 +235,9 @@ curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- u
 
 # 阿里云镜像（国内推荐）
 curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- up --aliyun --public-url https://skillhub.your-company.com --version latest
+
+# 通过反向代理部署到子路径
+curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- up --public-url https://skillhub.your-company.com/skillhub --base-path /skillhub/
 ```
 
 ### 配置参数说明
@@ -242,6 +245,7 @@ curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- u
 | 参数 | 说明 | 示例 |
 |------|------|------|
 | `--public-url <url>` | 公网访问地址（推荐配置） | `--public-url https://skill.example.com` |
+| `--base-path <path>` | 将 Web UI 发布到反向代理子路径，并同步配置同源 API 路由 | `--base-path /skillhub/` |
 | `--version <tag>` | 指定镜像版本 | `--version v0.2.0` |
 | `--aliyun` | 使用阿里云镜像（国内推荐） | `--aliyun` |
 | `--home <dir>` | 指定运行时目录 | `--home /opt/skillhub` |
@@ -249,6 +253,11 @@ curl -fsSL https://imageless.oss-cn-beijing.aliyuncs.com/runtime.sh | sh -s -- u
 
 > **重要**：生产环境请务必配置 `--public-url`，确保 CLI 安装命令和 Agent 设置指引显示正确的地址。
 
+如果通过 `/skillhub/` 这类子路径对外发布，需要让公网地址和前端基础路径保持一致。
+例如 `--public-url https://skill.example.com/skillhub --base-path /skillhub/`
+会写入 `SKILLHUB_PUBLIC_BASE_URL=https://skill.example.com/skillhub`、
+`SKILLHUB_WEB_BASE_PATH=/skillhub/` 和 `SKILLHUB_WEB_API_BASE_URL=/skillhub`。
+
 ### 使用 Kubernetes
 
 ```bash
diff --git a/scripts/runtime.sh b/scripts/runtime.sh
index fec6375e..c8b3fcdb 100755
--- a/scripts/runtime.sh
+++ b/scripts/runtime.sh
@@ -13,6 +13,7 @@ SKILLHUB_HOME_DEFAULT="${TMPDIR:-/tmp}/skillhub-runtime"
 SKILLHUB_HOME="${SKILLHUB_HOME:-$SKILLHUB_HOME_DEFAULT}"
 SKILLHUB_VERSION_VALUE="${SKILLHUB_VERSION:-}"
 SKILLHUB_PUBLIC_BASE_URL_VALUE="${SKILLHUB_PUBLIC_BASE_URL:-}"
+SKILLHUB_WEB_BASE_PATH_VALUE="${SKILLHUB_WEB_BASE_PATH:-}"
 SKILLHUB_ALIYUN_REGISTRY="${SKILLHUB_ALIYUN_REGISTRY:-crpi-ptu2rqimrigtq0qx.cn-hangzhou.personal.cr.aliyuncs.com}"
 SKILLHUB_ALIYUN_NAMESPACE="${SKILLHUB_ALIYUN_NAMESPACE:-skill_hub}"
 SKILLHUB_MIRROR_REGISTRY_VALUE="${SKILLHUB_MIRROR_REGISTRY:-}"
@@ -89,6 +90,11 @@ while [ "$#" -gt 0 ]; do
       SKILLHUB_PUBLIC_BASE_URL_VALUE="$2"
       shift 2
       ;;
+    --base-path)
+      [ "$#" -ge 2 ] || { echo "Missing value for --base-path" >&2; exit 1; }
+      SKILLHUB_WEB_BASE_PATH_VALUE="$2"
+      shift 2
+      ;;
     --help|-h)
       cat <<EOF
 Usage: sh runtime.sh [up|down|clean|ps|logs|pull] [options]
@@ -100,6 +106,7 @@ Options:
   --home <dir>          Store runtime files in a specific directory
   --ref <git-ref>       Download runtime files from a specific Git ref
   --public-url <url>    Public access URL (e.g. https://skill.example.com)
+  --base-path <path>    Serve Web UI under a sub-path, e.g. /skillhub/
   --server-image <img>  Override backend image repository
   --web-image <img>     Override frontend image repository
   --scanner-image <img> Override scanner image repository
@@ -183,6 +190,46 @@ set_env_value() {
   secure_env_file
 }
 
+normalize_base_path() {
+  value="$1"
+  [ -n "$value" ] || { echo "--base-path must not be empty" >&2; exit 1; }
+
+  case "$value" in
+    /)
+      printf '/'
+      return 0
+      ;;
+    /*/) ;;
+    /*) value="$value/" ;;
+    *) value="/$value/" ;;
+  esac
+
+  case "$value" in
+    *//*|*[!A-Za-z0-9._~/-]*)
+      echo "--base-path contains unsupported characters: $value" >&2
+      exit 1
+      ;;
+  esac
+
+  case "$value" in
+    */./*|*/../*)
+      echo "--base-path must not contain '.' or '..' path segments: $value" >&2
+      exit 1
+      ;;
+  esac
+
+  first_segment=${value#/}
+  first_segment=${first_segment%%/*}
+  case "$first_segment" in
+    api|oauth2|login|assets|registry|nginx-health|.well-known|runtime-config.js)
+      echo "--base-path must not start with a reserved SkillHub path segment: $first_segment" >&2
+      exit 1
+      ;;
+  esac
+
+  printf '%s' "$value"
+}
+
 secure_env_file() {
   if [ -f "$ENV_FILE" ]; then
     chmod 600 "$ENV_FILE"
@@ -359,6 +406,16 @@ prepare_runtime_files() {
     set_env_value "SKILLHUB_PUBLIC_BASE_URL" "$SKILLHUB_PUBLIC_BASE_URL_VALUE"
   fi
 
+  if [ -n "$SKILLHUB_WEB_BASE_PATH_VALUE" ]; then
+    normalized_base_path="$(normalize_base_path "$SKILLHUB_WEB_BASE_PATH_VALUE")"
+    set_env_value "SKILLHUB_WEB_BASE_PATH" "$normalized_base_path"
+    if [ "$normalized_base_path" = "/" ]; then
+      set_env_value "SKILLHUB_WEB_API_BASE_URL" ""
+    else
+      set_env_value "SKILLHUB_WEB_API_BASE_URL" "${normalized_base_path%/}"
+    fi
+  fi
+
   if [ "$DISABLE_SCANNER" = "true" ]; then
     set_env_value "SKILLHUB_SECURITY_SCANNER_ENABLED" "false"
   fi
diff --git a/scripts/tests/runtime-secret-test.sh b/scripts/tests/runtime-secret-test.sh
index 506b58fd..81d56a86 100755
--- a/scripts/tests/runtime-secret-test.sh
+++ b/scripts/tests/runtime-secret-test.sh
@@ -120,4 +120,18 @@ grep -Fq "SKILLHUB_SECURITY_SCANNER_ENABLED=false" "$home_no_scanner/.env.releas
 grep -Fq -- "up -d --no-deps --scale skill-scanner=0 server web" "$home_no_scanner/docker.log" \
   || fail "runtime --no-scanner should start server/web without waiting on scanner dependencies"
 
+home_sub_path="$tmp/sub-path"
+stdout_sub_path="$tmp/sub-path.out"
+mkdir -p "$home_sub_path"
+run_runtime "$home_sub_path" "$bin_dir" "$stdout_sub_path" \
+  --public-url http://localhost/skillhub \
+  --base-path skillhub
+
+grep -Fq "SKILLHUB_PUBLIC_BASE_URL=http://localhost/skillhub" "$home_sub_path/.env.release" \
+  || fail "runtime should persist the public URL for sub-path deployments"
+grep -Fq "SKILLHUB_WEB_BASE_PATH=/skillhub/" "$home_sub_path/.env.release" \
+  || fail "runtime should normalize and persist SKILLHUB_WEB_BASE_PATH"
+grep -Fq "SKILLHUB_WEB_API_BASE_URL=/skillhub" "$home_sub_path/.env.release" \
+  || fail "runtime should align SKILLHUB_WEB_API_BASE_URL with the base path"
+
 echo "runtime-secret-test passed"