diff --git a/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/constant/OSSFileTypeEnum.java b/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/constant/OSSFileTypeEnum.java
index 9e09679..cd3535d 100644
--- a/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/constant/OSSFileTypeEnum.java
+++ b/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/constant/OSSFileTypeEnum.java
@@ -7,7 +7,7 @@ import net.lab1024.sa.base.common.enumeration.BaseEnum;
 @AllArgsConstructor
 @Getter
 public enum OSSFileTypeEnum implements BaseEnum {
-    PUBLIC(1, "static/images"),
+    PUBLIC(1, "public"),
     SIGN(2, "sign"),
     ;
 
diff --git a/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/controller/OSSFileController.java b/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/controller/OSSFileController.java
index 43c4473..e6a7d75 100644
--- a/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/controller/OSSFileController.java
+++ b/sa-admin/src/main/java/net/lab1024/sa/admin/module/business/file/controller/OSSFileController.java
@@ -59,7 +59,7 @@ public class OSSFileController {
             Date expiration = new Date(expireEndTime);
             PolicyConditions policyConds = new PolicyConditions();
             policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 10*1024*1024);// 最大 10 M
-            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, ossFileType.getDesc());
+            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);
 
             String postPolicy = client.generatePostPolicy(expiration, policyConds);
             byte[] binaryData = postPolicy.getBytes("utf-8");
@@ -98,7 +98,7 @@ public class OSSFileController {
             Date expiration = new Date(expireEndTime);
             PolicyConditions policyConds = new PolicyConditions();
             policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 10*1024*1024);// 最大 10 M
-            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, ossFileType.getDesc());
+            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);
 
             String postPolicy = client.generatePostPolicy(expiration, policyConds);
             byte[] binaryData = postPolicy.getBytes("utf-8");