diff --git a/api/api_v1/endpoints/xquery.py b/api/api_v1/endpoints/xquery.py
index a845c00..36ea713 100644
--- a/api/api_v1/endpoints/xquery.py
+++ b/api/api_v1/endpoints/xquery.py
@@ -59,6 +59,8 @@ async def ltv_model_sql(
         df.loc[len(df)] = '0'
         df.loc[len(df) - 1, 'date'] = d
         days = (pd.Timestamp.now().date() - d).days
+        if days + 2 >= res['ltv_len']:
+            continue
         df.loc[len(df) - 1, f'LTV{days + 2}':] = '-'
     df.sort_values('date', inplace=True)
     df.rename(columns={'date': '注册日期'}, inplace=True)
diff --git a/models/x_analysis.py b/models/x_analysis.py
index 163e752..fb43c15 100644
--- a/models/x_analysis.py
+++ b/models/x_analysis.py
@@ -54,7 +54,7 @@ class XAnalysis:
         else:
             self.event_view = self.data_in.eventView
             self.events = self.data_in.events
-        for d in pd.date_range(self.event_view['startTime'],self.event_view['endTime'],  freq='D', tz='UTC'):
+        for d in pd.date_range(self.event_view['startTime'], self.event_view['endTime'], freq='D', tz='UTC'):
             self.date_range.append(d.date())
 
         self.global_filters = self._get_global_filters()
@@ -130,7 +130,7 @@ class XAnalysis:
         quota = self.event_view['quota']
         select_ltv = []
         sumpay = []
-        for i in range(1, days+2):
+        for i in range(1, days + 2):
             # select_ltv.append(func.round(sa.Column(f'sumpay_{i}') / sa.Column('cnt1'), 2).label(f'LTV{i}'))
             select_ltv.append(
                 f"if(dateDiff('day', reg.date, now())<{i - 1}, '-',toString(round(sumpay_{i} / cnt1, 2))) AS LTV{i}")
@@ -189,5 +189,6 @@ class XAnalysis:
         return {'sql': sql, 'quota': quota,
                 'start_date': self.event_view['startTime'][:10],
                 'end_date': self.event_view['endTime'][:10],
-                'date_range': self.date_range
+                'date_range': self.date_range,
+                'ltv_len': days + 1
                 }