diff --git a/jikimo_purchase_tier_validation/models/models.py b/jikimo_purchase_tier_validation/models/models.py
index df2e8894..4602eb50 100644
--- a/jikimo_purchase_tier_validation/models/models.py
+++ b/jikimo_purchase_tier_validation/models/models.py
@@ -156,7 +156,7 @@ class jikimo_purchase_tier_validation(models.Model):
 
 
 class jikimo_purchase_request(models.Model):
-    _inherit = 'purchase.order'
+    _inherit = 'purchase.request'
     _description = "采购申请"