diff --git a/.changelog/3324.txt b/.changelog/3324.txt
new file mode 100644
index 0000000000..7a99cd3632
--- /dev/null
+++ b/.changelog/3324.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_postgresql_readonly_instance: fixed the issue of returning an empty id when creating
+```
\ No newline at end of file
diff --git a/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance.go b/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance.go
index a7d8a28069..8356bf7d78 100644
--- a/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance.go
+++ b/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance.go
@@ -324,7 +324,28 @@ func resourceTencentCloudPostgresqlReadOnlyInstanceCreate(d *schema.ResourceData
 	if err != nil {
 		return err
 	}
-	instanceId := *response.Response.DBInstanceIdSet[0]
+	var instanceId string
+	if len(response.Response.DBInstanceIdSet) == 0 {
+		if len(response.Response.DealNames) == 0 {
+			return fmt.Errorf("TencentCloud SDK returns empty postgresql ID and Deals")
+		}
+		dealId := response.Response.DealNames[0]
+		service := PostgresqlService{client: meta.(tccommon.ProviderMeta).GetAPIV3Conn()}
+
+		deals, err := service.DescribeOrders(ctx, []*string{dealId})
+		if err != nil {
+			return err
+		}
+		if len(deals) > 0 && len(deals[0].DBInstanceIdSet) > 0 {
+			if deals[0].DBInstanceIdSet[0] != nil {
+				instanceId = *deals[0].DBInstanceIdSet[0]
+			}
+		}
+	} else {
+		if response.Response.DBInstanceIdSet[0] != nil {
+			instanceId = *response.Response.DBInstanceIdSet[0]
+		}
+	}
 	d.SetId(instanceId)
 
 	// check creation done
diff --git a/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance_test.go b/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance_test.go
index a23deddded..19a5cf86a3 100644
--- a/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance_test.go
+++ b/tencentcloud/services/postgresql/resource_tc_postgresql_readonly_instance_test.go
@@ -132,6 +132,24 @@ func TestAccTencentCloudPostgresqlReadonlyInstanceResource_update_ro_group(t *te
 	})
 }
 
+func TestAccTencentCloudPostgresqlReadonlyInstanceResource_prepaid(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck: func() {
+			tcacctest.AccPreCheck(t)
+		},
+		Providers: tcacctest.AccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccPostgresqlReadonlyInstanceInstance_prepaid,
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttrSet(testPostgresqlReadonlyInstanceResourceKey, "id"),
+					resource.TestCheckResourceAttr(testPostgresqlReadonlyInstanceResourceKey, "instance_charge_type", "PREPAID"),
+				),
+			},
+		},
+	})
+}
+
 const testAccPostgresqlReadonlyInstanceInstance_basic_without_rogroup string = tcacctest.OperationPresetPGSQL + tcacctest.DefaultVpcSubnets + tcacctest.DefaultSecurityGroupData + `
   resource "tencentcloud_postgresql_readonly_instance" "instance" {
 	auto_renew_flag       = 0
@@ -244,3 +262,22 @@ const testAccPostgresqlReadonlyInstanceInstance_update_rogroup string = tcacctes
 	min_delay_eliminate_reserve = 1
   }
 `
+
+const testAccPostgresqlReadonlyInstanceInstance_prepaid = `
+resource "tencentcloud_postgresql_readonly_instance" "instance" {
+  db_version            = "17.0"
+  instance_charge_type  = "PREPAID"
+  period                = 1
+  master_db_instance_id = "postgres-25816pex"
+  memory                = 4
+  cpu                   = 2
+  name                  = "tf_ro_instance_test_rog"
+  need_support_ipv6     = 0
+  project_id            = 0
+  security_groups_ids   = ["sg-kensue7b"]
+  storage               = 20
+  vpc_id                = "vpc-48tmc13b"
+  subnet_id             = "subnet-96hw3j18"
+  zone                  = "ap-guangzhou-3"
+}
+`