diff --git a/api/api_v1/endpoints/query.py b/api/api_v1/endpoints/query.py
index 47ffc30..3d526c4 100644
--- a/api/api_v1/endpoints/query.py
+++ b/api/api_v1/endpoints/query.py
@@ -343,7 +343,7 @@ async def retention_model(request: Request,
     tmp['p_outflow'] = (pd.Series(avgo) * 100 / tmp['d0']).round(2).tolist()
     tmp['n_outflow'] = pd.Series(avgo).values.tolist()
 
-    title = ['日期', '用户数', '次留', *[f'{i}留' for i in retention_n[1:]]]
+    title = ['日期', '用户数', '次留', *[f'{i+1}留' for i in retention_n[1:]]]
 
     # 未到达的日期需要补齐-
     retention_length = len(retention_n)