diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLUpdateBuilder.cs b/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLUpdateBuilder.cs
index f395e3259..5d3577816 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLUpdateBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLUpdateBuilder.cs
@@ -237,6 +237,10 @@ namespace SqlSugar
         }
         protected override string GetJoinUpdate(string columnsString, ref string whereString)
         {
+            if (this.JoinInfos?.Count > 1) 
+            {
+                return this.GetJoinUpdateMany(columnsString);
+            }
             var formString = $"  {Builder.GetTranslationColumnName(this.TableName)}  AS {Builder.GetTranslationColumnName(this.ShortName)} ";
             var joinString = "";
             foreach (var item in this.JoinInfos)
@@ -248,6 +252,22 @@ namespace SqlSugar
             columnsString = columnsString.Replace(Builder.GetTranslationColumnName(this.ShortName)+".","")+joinString; 
             return string.Format(SqlTemplate, tableName, columnsString, whereString);
         }
+        private string GetJoinUpdateMany(string columnsString)
+        {
+            var formString = $"  {Builder.GetTranslationColumnName(this.TableName)}  AS {Builder.GetTranslationColumnName(this.ShortName)} ";
+            var joinString = "";
+            var i = 0;
+            foreach (var item in this.JoinInfos)
+            {
+                var whereString = " ON " + item.JoinWhere;
+                joinString += $"\r\n JOIN {Builder.GetTranslationColumnName(item.TableName)}  {Builder.GetTranslationColumnName(item.ShortName)} ";
+                joinString = joinString + whereString;
+                i++;
+            }
+            var tableName = Builder.GetTranslationColumnName(this.TableName) + "\r\n ";
+            columnsString = columnsString.Replace(Builder.GetTranslationColumnName(this.ShortName) + ".", "") + $" FROM {Builder.GetTranslationColumnName(this.TableName)} {Builder.GetTranslationColumnName(this.ShortName)}\r\n " + joinString;
+            return string.Format(SqlTemplate, tableName, columnsString, null);
+        }
         public override string FormatDateTimeOffset(object value)
         {
             return "'" + ((DateTimeOffset)value).ToString("o") + "'";