diff --git a/main/manager-api/src/main/java/xiaozhi/modules/sys/dto/SysParamsDTO.java b/main/manager-api/src/main/java/xiaozhi/modules/sys/dto/SysParamsDTO.java
index ad816b35..a6f27b72 100644
--- a/main/manager-api/src/main/java/xiaozhi/modules/sys/dto/SysParamsDTO.java
+++ b/main/manager-api/src/main/java/xiaozhi/modules/sys/dto/SysParamsDTO.java
@@ -39,7 +39,7 @@ public class SysParamsDTO implements Serializable {
 
     @Schema(description = "值类型")
     @NotBlank(message = "{sysparams.valuetype.require}", groups = DefaultGroup.class)
-    @Pattern(regexp = "^(string|number|boolean|array)$", message = "{sysparams.valuetype.pattern}", groups = DefaultGroup.class)
+    @Pattern(regexp = "^(string|number|boolean|array|json)$", message = "{sysparams.valuetype.pattern}", groups = DefaultGroup.class)
     private String valueType;
 
     @Schema(description = "备注")
diff --git a/main/manager-api/src/main/java/xiaozhi/modules/sys/service/impl/SysParamsServiceImpl.java b/main/manager-api/src/main/java/xiaozhi/modules/sys/service/impl/SysParamsServiceImpl.java
index 15f62816..2187a8b4 100644
--- a/main/manager-api/src/main/java/xiaozhi/modules/sys/service/impl/SysParamsServiceImpl.java
+++ b/main/manager-api/src/main/java/xiaozhi/modules/sys/service/impl/SysParamsServiceImpl.java
@@ -127,6 +127,12 @@ public class SysParamsServiceImpl extends BaseServiceImpl<SysParamsDao, SysParam
                 break;
             case "json":
                 try {
+                    // 首先检查是否以 { 开头，以 } 结尾
+                    String trimmedValue = paramValue.trim();
+                    if (!trimmedValue.startsWith("{") || !trimmedValue.endsWith("}")) {
+                        throw new RenException(ErrorCode.PARAM_JSON_INVALID);
+                    }
+                    // 然后尝试解析JSON
                     JsonUtils.parseObject(paramValue, Object.class);
                 } catch (Exception e) {
                     throw new RenException(ErrorCode.PARAM_JSON_INVALID);