diff --git a/datasets/models.py b/datasets/models.py
index 5dc999e..190a994 100644
--- a/datasets/models.py
+++ b/datasets/models.py
@@ -1,5 +1,8 @@
 from django.db import models
 import uuid
+from accounts.models import User
+from django.utils import timezone
+
 class CreatorProfile(models.Model):
     """达人信息模型，用于筛选功能"""
     # 基本信息
@@ -154,7 +157,7 @@ class CreatorProfile(models.Model):
 
 class Brand(models.Model):
     """品牌模型"""
-    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    id = models.AutoField(primary_key=True)  # 改为int自增主键
     name = models.CharField(max_length=100, unique=True, verbose_name='品牌名称')
     description = models.TextField(blank=True, null=True, verbose_name='品牌描述')
     logo_url = models.CharField(max_length=255, blank=True, null=True, verbose_name='品牌Logo')
@@ -185,7 +188,7 @@ class Brand(models.Model):
 
 class Product(models.Model):
     """产品模型 - 作为一个知识库"""
-    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    id = models.AutoField(primary_key=True)  # 改为int自增主键
     brand = models.ForeignKey(Brand, on_delete=models.CASCADE, related_name='products', verbose_name='所属品牌')
     name = models.CharField(max_length=100, verbose_name='产品名称')
     description = models.TextField(blank=True, null=True, verbose_name='产品描述')
@@ -251,6 +254,7 @@ class CreatorProductMatch(models.Model):
     product = models.ForeignKey('Product', on_delete=models.CASCADE, verbose_name='产品')
     is_matched = models.BooleanField(default=False, verbose_name='是否匹配')
     match_score = models.FloatField(blank=True, null=True, verbose_name='匹配度分数')
+    create_time = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
 
     class Meta:
         unique_together = ('creator', 'product')
@@ -276,7 +280,8 @@ class Dataset(models.Model):
     name = models.CharField(max_length=255)
 
     # 创建该数据集的用户，最长100个字符，不能为空
-    user = models.CharField(max_length=100)
+    # user = models.CharField(max_length=100)
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
 
     # 任务类型，最长50个字符，不能为空
     task_type = models.CharField(max_length=16)