diff --git a/playedu-api/src/main/java/xyz/playedu/api/controller/backend/AppConfigController.java b/playedu-api/src/main/java/xyz/playedu/api/controller/backend/AppConfigController.java
index e825384..a880499 100644
--- a/playedu-api/src/main/java/xyz/playedu/api/controller/backend/AppConfigController.java
+++ b/playedu-api/src/main/java/xyz/playedu/api/controller/backend/AppConfigController.java
@@ -27,6 +27,7 @@ import xyz.playedu.common.constant.SystemConstant;
 import xyz.playedu.common.domain.AppConfig;
 import xyz.playedu.common.service.AppConfigService;
 import xyz.playedu.common.types.JsonResponse;
+import xyz.playedu.common.util.StringUtil;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -45,7 +46,7 @@ public class AppConfigController {
         List<AppConfig> configs = configService.allShow();
         List<AppConfig> data = new ArrayList<>();
         for (AppConfig item : configs) {
-            if (item.getIsPrivate() == 1) {
+            if (item.getIsPrivate() == 1 && StringUtil.isNotEmpty(item.getKeyValue())) {
                 item.setKeyValue(SystemConstant.CONFIG_MASK);
             }
             data.add(item);
diff --git a/playedu-api/src/main/java/xyz/playedu/api/controller/backend/SystemController.java b/playedu-api/src/main/java/xyz/playedu/api/controller/backend/SystemController.java
index eeaae2b..90b5efc 100644
--- a/playedu-api/src/main/java/xyz/playedu/api/controller/backend/SystemController.java
+++ b/playedu-api/src/main/java/xyz/playedu/api/controller/backend/SystemController.java
@@ -44,7 +44,7 @@ public class SystemController {
         Map<String, String> configData = BCtx.getConfig();
 
         String apiUrl = configData.get(ConfigConstant.SYSTEM_API_URL);
-        if (apiUrl == null || apiUrl.trim().length() == 0) {
+        if (apiUrl == null || apiUrl.trim().isEmpty()) {
             apiUrl = RequestUtil.uriWithProtocol();
         } else {
             if (apiUrl.endsWith("/")) {
@@ -62,7 +62,7 @@ public class SystemController {
 
         // 学员的默认头像
         String memberDefaultAvatar = configData.get(ConfigConstant.MEMBER_DEFAULT_AVATAR);
-        if (memberDefaultAvatar == null || memberDefaultAvatar.trim().length() == 0) {
+        if (memberDefaultAvatar == null || memberDefaultAvatar.trim().isEmpty()) {
             data.put(ConfigConstant.MEMBER_DEFAULT_AVATAR, apiUrl + "/images/default_avatar.png");
         } else {
             data.put(ConfigConstant.MEMBER_DEFAULT_AVATAR, memberDefaultAvatar);