diff --git a/myblog/blog/migrations/0002_post_publish_date.py b/myblog/blog/migrations/0002_post_publish_date.py
new file mode 100644
index 0000000..286041d
--- /dev/null
+++ b/myblog/blog/migrations/0002_post_publish_date.py
@@ -0,0 +1,19 @@
+# Generated by Django 5.2.4 on 2025-07-26 12:10
+
+import django.utils.timezone
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('blog', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='post',
+            name='publish_date',
+            field=models.DateTimeField(default=django.utils.timezone.now),
+        ),
+    ]
diff --git a/myblog/blog/models.py b/myblog/blog/models.py
index bbeb8c8..40efddc 100644
--- a/myblog/blog/models.py
+++ b/myblog/blog/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from django.utils import timezone
 
 
 # Create your models here.
@@ -7,6 +8,8 @@ class Post(models.Model):
     content = models.TextField()
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
+    # 修改publish_date字段，使其在后台可编辑
+    publish_date = models.DateTimeField(default=timezone.now)
 
     def __str__(self):
-        return self.title
+        return f"{self.title} ({self.publish_date.strftime('%Y-%m-%d')})"
\ No newline at end of file
diff --git a/myblog/blog/templates/blog/detail.html b/myblog/blog/templates/blog/detail.html
index 697ad5f..bad1f8c 100644
--- a/myblog/blog/templates/blog/detail.html
+++ b/myblog/blog/templates/blog/detail.html
@@ -9,7 +9,7 @@
 <div style="max-width: 800px; margin: 0 auto; padding: 0 20px; text-align: center;">
     <!-- 添加网站标题 -->
     <h1>{{ post.title }}</h1>
-    <p>{{ post.created_at }}</p>
+    <p>{{ post.publish_date }}</p>
     <div>{{ post.content|linebreaks }}</div>
     <p><a href="/">← 返回首页</a></p>
 </div>
diff --git a/myblog/blog/templates/blog/index.html b/myblog/blog/templates/blog/index.html
index 6fc6afd..efb794d 100644
--- a/myblog/blog/templates/blog/index.html
+++ b/myblog/blog/templates/blog/index.html
@@ -12,7 +12,7 @@
         {% for post in posts %}
             <li style="margin: 10px 0; text-align: left;">
                 <a href="{% url 'detail' post.id %}">{{ post.title }}</a> -
-                发布时间：{{ post.published_at|date:"Y年n月j日 H:i" }}
+                发布时间：{{ post.publish_date|date:"Y年n月j日 H:i" }}
             </li>
         {% endfor %}
     </ul>