diff --git a/yuthon_property/models/property_meter_archives.py b/yuthon_property/models/property_meter_archives.py
index 733dfb48e..864ba990e 100644
--- a/yuthon_property/models/property_meter_archives.py
+++ b/yuthon_property/models/property_meter_archives.py
@@ -217,7 +217,7 @@ class MeterArchivesLine(models.Model):
     def compute_meter_values(self):
         """合并计算当前用量和上次用量"""
         for line in self:
-            if line.current_read > line.last_read:
+            if line.current_read >= line.last_read:
                 line.current_meter = line.current_read - line.last_read
             else:
                 if line.maximum_count > 0: