diff --git a/positions/models.py b/positions/models.py
index f6f3da2..4323297 100644
--- a/positions/models.py
+++ b/positions/models.py
@@ -4,25 +4,30 @@ from companies.models import Company
 
 
 class Position(models.Model):
+    POSITION_STATUS_CHOICES = [
+        (0, '已下架'),
+        (1, '正在招聘'),
+        (2, '已结束'),
+        (3, '不确定'),
+    ]
+
     title = models.CharField(max_length=200, verbose_name="职位名称")
-    nature = models.CharField(max_length=50, verbose_name="职位性质")  # 修改为普通 CharField
-    category = models.CharField(max_length=100, verbose_name="职位类别")
-    region = models.CharField(max_length=100, verbose_name="职位区域")
-    experience = models.CharField(max_length=100, verbose_name="工作经历要求")
-    education = models.CharField(max_length=100, verbose_name="学历要求")
-    salary = models.CharField(max_length=100, verbose_name="职位薪资")
-    website = models.ForeignKey(
-        Website,
-        on_delete=models.CASCADE,
-        related_name="positions",
-        verbose_name="所属网站"
-    )
-    company = models.ForeignKey(
-        Company,
-        on_delete=models.CASCADE,
-        related_name="positions",
-        verbose_name="所属企业"
-    )
+    nature = models.CharField(max_length=50, verbose_name="职位性质", blank=True, null=True, )
+    category = models.CharField(max_length=100, verbose_name="职位类别", blank=True, null=True, )
+    region = models.CharField(max_length=100, verbose_name="职位区域", blank=True, null=True, )
+    experience = models.CharField(max_length=100, verbose_name="工作经历要求", blank=True, null=True, )
+    education = models.CharField(max_length=100, verbose_name="学历要求", blank=True, null=True, )
+    salary = models.CharField(max_length=100, verbose_name="职位薪资", blank=True, null=True, )
+    position_status = models.IntegerField(choices=POSITION_STATUS_CHOICES, default=0, verbose_name='职位状态',
+                                          blank=True, null=True, )
+    description = models.TextField(verbose_name="职位描述(详情)", blank=True, null=True, )
+    contact_name = models.CharField(max_length=100, verbose_name="联系人姓名", blank=True, null=True, )
+    contact_info = models.CharField(max_length=200, verbose_name="联系方式", blank=True, null=True, )
+    benefits = models.TextField(verbose_name="职位福利", blank=True, null=True, help_text="可用换行或逗号分隔多条福利")
+    openings = models.PositiveIntegerField(verbose_name="招聘人数", default=1, blank=True, null=True,
+                                           help_text="默认为 1")
+    website = models.ForeignKey(Website, on_delete=models.CASCADE, related_name="positions", verbose_name="所属网站")
+    company = models.ForeignKey(Company, on_delete=models.CASCADE, related_name="positions", verbose_name="所属企业")
 
     def __str__(self):
         return f"{self.company.name} - {self.title}"
@@ -30,19 +35,3 @@ class Position(models.Model):
     class Meta:
         verbose_name = "职位"
         verbose_name_plural = "职位列表"
-
-
-class PositionDetail(models.Model):
-    position = models.OneToOneField(
-        Position,
-        on_delete=models.CASCADE,
-        related_name="detail",
-        verbose_name="所属职位"
-    )
-    description = models.TextField(verbose_name="职位描述(详情)")
-    contact_name = models.CharField(max_length=100, verbose_name="联系人姓名")
-    contact_info = models.CharField(max_length=200, verbose_name="联系方式")
-
-    class Meta:
-        verbose_name = "职位详情"
-        verbose_name_plural = "职位详情列表"