diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/AbstractFileClient.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/AbstractFileClient.java
index ec74a6d..78d64ff 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/AbstractFileClient.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/AbstractFileClient.java
@@ -66,4 +66,22 @@ public abstract class AbstractFileClient<Config extends FileClientConfig> implem
         return StrUtil.format("{}/admin-api/infra/file/{}/get/{}", domain, getId(), path);
     }
 
+    /**
+     * 格式化文件的 URL 访问地址，可选是否拼接“admin-api/infra/file/{id}/get” 前缀
+     *
+     * 部分场景（例如 SFTP/FTP 直接将文件上传到 Web 根目录），自定义域名直接指向文件，
+     * 无需再经过后端 FileController 转发，此时应关闭前缀，仅返回 {domain}/{path}。
+     *
+     * @param domain 自定义域名
+     * @param path 文件路径
+     * @param addPrefix 是否添加“admin-api/infra/file/{id}/get”前缀
+     * @return URL 访问地址
+     */
+    protected String formatFileUrl(String domain, String path, Boolean addPrefix) {
+        if (Boolean.FALSE.equals(addPrefix)) {
+            return StrUtil.format("{}/{}", domain, path);
+        }
+        return formatFileUrl(domain, path);
+    }
+
 }
diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClient.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClient.java
index 0108def..b5610a9 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClient.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClient.java
@@ -49,7 +49,7 @@ public class FtpFileClient extends AbstractFileClient<FtpFileClientConfig> {
             throw new FtpException(StrUtil.format("上传文件到目标目录 ({}) 失败", filePath));
         }
         // 拼接返回路径
-        return super.formatFileUrl(config.getDomain(), path);
+        return super.formatFileUrl(config.getDomain(), path, config.getAddPrefix());
     }
 
     @Override
diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClientConfig.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClientConfig.java
index 724e831..edda8f1 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClientConfig.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/ftp/FtpFileClientConfig.java
@@ -28,6 +28,14 @@ public class FtpFileClientConfig implements FileClientConfig {
     @URL(message = "domain 必须是 URL 格式")
     private String domain;
 
+    /**
+     * 是否添加“admin-api/infra/file/{id}/get”前缀
+     *
+     * 当自定义域名直接指向文件时，应设为 false，此时返回 {domain}/{path}；
+     * 否则默认 true，通过后端 FileController 转发获取文件。
+     */
+    private Boolean addPrefix = true;
+
     /**
      * 主机地址
      */
diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClient.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClient.java
index d753cbe..0bb9aff 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClient.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClient.java
@@ -30,7 +30,7 @@ public class LocalFileClient extends AbstractFileClient<LocalFileClientConfig> {
         String filePath = getFilePath(path);
         FileUtil.writeBytes(content, filePath);
         // 拼接返回路径
-        return super.formatFileUrl(config.getDomain(), path);
+        return super.formatFileUrl(config.getDomain(), path, config.getAddPrefix());
     }
 
     @Override
diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClientConfig.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClientConfig.java
index b393d01..b0e3f60 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClientConfig.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/local/LocalFileClientConfig.java
@@ -27,4 +27,12 @@ public class LocalFileClientConfig implements FileClientConfig {
     @URL(message = "domain 必须是 URL 格式")
     private String domain;
 
+    /**
+     * 是否添加“admin-api/infra/file/{id}/get”前缀
+     *
+     * 当自定义域名直接指向文件时，应设为 false，此时返回 {domain}/{path}；
+     * 否则默认 true，通过后端 FileController 转发获取文件。
+     */
+    private Boolean addPrefix = true;
+
 }
diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClient.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClient.java
index 9c2fe2b..a0919c0 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClient.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClient.java
@@ -37,7 +37,7 @@ public class SftpFileClient extends AbstractFileClient<SftpFileClientConfig> {
         File file = FileUtils.createTempFile(content);
         sftp.upload(filePath, file);
         // 拼接返回路径
-        return super.formatFileUrl(config.getDomain(), path);
+        return super.formatFileUrl(config.getDomain(), path, config.getAddPrefix());
     }
 
     @Override
diff --git a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClientConfig.java b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClientConfig.java
index 1a8cdbe..02e7e83 100644
--- a/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClientConfig.java
+++ b/yshop-drink-boot3/yshop-module-infra/yshop-module-infra-biz/src/main/java/co/yixiang/yshop/module/infra/framework/file/core/client/sftp/SftpFileClientConfig.java
@@ -28,6 +28,14 @@ public class SftpFileClientConfig implements FileClientConfig {
     @URL(message = "domain 必须是 URL 格式")
     private String domain;
 
+    /**
+     * 是否添加“admin-api/infra/file/{id}/get”前缀
+     *
+     * 当自定义域名直接指向文件（例如 SFTP 上传到 Web 根目录）时，应设为 false，
+     * 此时返回 {domain}/{path}；否则默认 true，通过后端 FileController 转发获取文件。
+     */
+    private Boolean addPrefix = true;
+
     /**
      * 主机地址
      */
diff --git a/yshop-drink-vue3/src/api/infra/fileConfig/index.ts b/yshop-drink-vue3/src/api/infra/fileConfig/index.ts
index ba40054..7f6f44c 100644
--- a/yshop-drink-vue3/src/api/infra/fileConfig/index.ts
+++ b/yshop-drink-vue3/src/api/infra/fileConfig/index.ts
@@ -12,6 +12,7 @@ export interface FileClientConfig {
   accessKey?: string
   accessSecret?: string
   domain: string
+  addPrefix?: boolean
 }
 
 export interface FileConfigVO {
diff --git a/yshop-drink-vue3/src/views/infra/fileConfig/FileConfigForm.vue b/yshop-drink-vue3/src/views/infra/fileConfig/FileConfigForm.vue
index 4d89d0a..9faa970 100644
--- a/yshop-drink-vue3/src/views/infra/fileConfig/FileConfigForm.vue
+++ b/yshop-drink-vue3/src/views/infra/fileConfig/FileConfigForm.vue
@@ -91,6 +91,22 @@
       <el-form-item v-else-if="formData.storage" label="自定义域名" prop="config.domain">
         <el-input v-model="formData.config.domain" placeholder="请输入自定义域名" />
       </el-form-item>
+      <!-- Local / FTP / SFTP：是否添加 admin-api/infra/file/{id}/get 前缀 -->
+      <el-form-item
+        v-if="formData.storage >= 10 && formData.storage <= 12"
+        label="添加访问前缀"
+        prop="config.addPrefix"
+      >
+        <el-switch
+          v-model="formData.config.addPrefix"
+          active-text="通过后端转发"
+          inactive-text="直连域名"
+        />
+        <div class="form-tip">
+          开启后返回 {域名}/admin-api/infra/file/{配置ID}/get/{文件路径}，由后端转发获取文件；
+          关闭后返回 {域名}/{文件路径}，适用于自定义域名直接指向文件（如 SFTP 上传到 Web 根目录）。
+        </div>
+      </el-form-item>
     </el-form>
     <template #footer>
       <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
@@ -117,7 +133,7 @@ const formData = ref({
   name: '',
   storage: 0,
   remark: '',
-  config: {} as FileConfigApi.FileClientConfig
+  config: { addPrefix: true } as FileConfigApi.FileClientConfig
 })
 const formRules = reactive<FormRules>({
   name: [{ required: true, message: '配置名不能为空', trigger: 'blur' }],
@@ -149,6 +165,10 @@ const open = async (type: string, id?: number) => {
     formLoading.value = true
     try {
       formData.value = await FileConfigApi.getFileConfig(id)
+      // 兼容旧配置：addPrefix 缺省默认为 true（通过后端转发）
+      if (formData.value.config && formData.value.config.addPrefix === undefined) {
+        formData.value.config.addPrefix = true
+      }
     } finally {
       formLoading.value = false
     }
@@ -189,8 +209,18 @@ const resetForm = () => {
     name: '',
     storage: undefined!,
     remark: '',
-    config: {} as FileConfigApi.FileClientConfig
+    config: { addPrefix: true } as FileConfigApi.FileClientConfig
   }
   formRef.value?.resetFields()
 }
 </script>
+
+<style scoped>
+.form-tip {
+  width: 100%;
+  margin-top: 4px;
+  font-size: 12px;
+  line-height: 1.5;
+  color: var(--el-text-color-secondary);
+}
+</style>