diff --git a/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs b/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs
index c724835c1..3e62826d5 100644
--- a/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLExpressionContext.cs
@@ -163,7 +163,7 @@ namespace SqlSugar
                 case DateType.Minute:
                     return $" ( ( ( DATE_PART('day', {end} - {begin}) ) * 24 + DATE_PART('hour', {end} - {begin} ) ) * 60 + DATE_PART('minute', {end} - {begin} ) )";
                 case DateType.Second:
-                    return $" ( ( ( DATE_PART('day', {end} - {begin}) ) * 24 + DATE_PART('hour', {end} - {begin} ) ) * 60 + DATE_PART('minute', {end} - {begin} ) ) * 60 + DATE_PART('minute', {end} - {begin} )";
+                    return $" ( ( ( DATE_PART('day', {end} - {begin}) ) * 24 + DATE_PART('hour', {end} - {begin} ) ) * 60 + DATE_PART('minute', {end} - {begin} ) ) * 60 + DATE_PART('second', {end} - {begin} )";
                 case DateType.Millisecond:
                     break;
                 default: