diff --git a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLInsertOrUpdateTest.cs b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLInsertOrUpdateTest.cs
index fb0b8be92..45f141891 100644
--- a/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLInsertOrUpdateTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/PostgreSQL/Curd/PostgreSQLInsertOrUpdateTest.cs
@@ -98,11 +98,37 @@ ON CONFLICT(""id"") DO UPDATE SET
             var lst = fsql.Select<tbiou02>().Where(a => new[] { 1, 2, 3, 4 }.Contains(a.id)).ToList();
             Assert.Equal(4, lst.Where(a => a.name == "00" + a.id).Count());
         }
+
         class tbiou02
         {
             public int id { get; set; }
             public string name { get; set; }
         }
+
+        [Fact]
+        public void InsertOrUpdate_TempPrimary()
+        {
+            fsql.Delete<tbiou_temp>().Where("1=1").ExecuteAffrows();
+            var iou = fsql.InsertOrUpdate<tbiou_temp>().SetSource(new tbiou_temp { name = "01", description = "testval" }, m => new { m.name });
+            var sql = iou.ToSql();
+            Assert.Equal(@"INSERT INTO ""tbiou_temp""(""name"", ""description"") VALUES('01', 'testval')
+ON CONFLICT(""name"") DO UPDATE SET
+""description"" = EXCLUDED.""description""", sql);
+            Assert.Equal(1, iou.ExecuteAffrows());
+
+            var iou2 = fsql.InsertOrUpdate<tbiou_temp>().SetSource(new tbiou_temp { name = "01", description = "testval2" }, m => new { m.name }).ExecuteAffrows();
+            Assert.Equal(1, iou2);
+
+        }
+        [Index("uix_tbiou_temp_name", "name", true)]
+        class tbiou_temp
+        {
+            [Column(IsPrimary = true, IsIdentity = true)]
+            public int id { get; set; }
+
+            public string name { get; set; }
+            public string description { get; set; }
+        }
         [Fact]
         public void InsertOrUpdate_OnePrimaryAndIdentity()
         {
diff --git a/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLInsertOrUpdate.cs b/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLInsertOrUpdate.cs
index da45a72ca..52e6bd4c4 100644
--- a/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLInsertOrUpdate.cs
+++ b/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLInsertOrUpdate.cs
@@ -58,7 +58,7 @@ string getInsertSql(List<T1> data, bool flagInsert, bool noneParameter)
                 if (IdentityColumn != null && flagInsert) sql = insert.ToSql();
                 else
                 {
-                    var ocdu = new OnConflictDoUpdate<T1>(insert.InsertIdentity());
+                    var ocdu = new OnConflictDoUpdate<T1>(_tempPrimarys?.Length > 0 ? insert : insert.InsertIdentity());
                     ocdu._tempPrimarys = _tempPrimarys;
                     var cols = _table.Columns.Values.Where(a => _updateSetDict.ContainsKey(a.Attribute.Name) ||
                         _tempPrimarys.Contains(a) == false && a.Attribute.CanUpdate == true && a.Attribute.IsIdentity == false && _updateIgnore.ContainsKey(a.Attribute.Name) == false);