diff --git a/backend/services/admin-service/src/pricing/tree-pricing.controller.ts b/backend/services/admin-service/src/pricing/tree-pricing.controller.ts
index fa0416a5..78f66133 100644
--- a/backend/services/admin-service/src/pricing/tree-pricing.controller.ts
+++ b/backend/services/admin-service/src/pricing/tree-pricing.controller.ts
@@ -9,32 +9,48 @@ import {
   HttpStatus,
 } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { IsNumber, IsString, IsBoolean, IsOptional } from 'class-validator';
 import { TreePricingService } from './tree-pricing.service';
 
 // ======================== DTO ========================
 
 class UpdateSupplementDto {
   /** 新的加价金额（整数 USDT） */
+  @IsNumber()
   newSupplement: number;
   /** 变更原因 */
+  @IsString()
   reason: string;
   /** 操作人ID */
+  @IsOptional()
+  @IsString()
   operatorId?: string;
 }
 
 class UpdateAutoIncreaseDto {
   /** 是否启用自动涨价 */
+  @IsBoolean()
   enabled: boolean;
   /** 每次自动涨价金额（整数 USDT） */
+  @IsOptional()
+  @IsNumber()
   amount?: number;
   /** 自动涨价间隔天数 */
+  @IsOptional()
+  @IsNumber()
   intervalDays?: number;
   /** 操作人ID */
+  @IsOptional()
+  @IsString()
   operatorId?: string;
 }
 
 class ChangeLogQueryDto {
+  @IsOptional()
+  @IsNumber()
   page?: number;
+  @IsOptional()
+  @IsNumber()
   pageSize?: number;
 }