diff --git a/tencentcloud/resource_tc_mysql_readonly_instance.go b/tencentcloud/resource_tc_mysql_readonly_instance.go
index f94d015942..508a71011b 100644
--- a/tencentcloud/resource_tc_mysql_readonly_instance.go
+++ b/tencentcloud/resource_tc_mysql_readonly_instance.go
@@ -41,19 +41,18 @@ func resourceTencentCloudMysqlReadonlyInstance() *schema.Resource {
 	readonlyInstanceInfo := map[string]*schema.Schema{
 		"master_instance_id": {
 			Type:        schema.TypeString,
-			ForceNew:    true,
 			Required:    true,
 			Description: "Indicates the master instance ID of recovery instances.",
 		},
 		"zone": {
 			Type:        schema.TypeString,
 			Optional:    true,
-			ForceNew:    true,
+			Computed:    true,
 			Description: "Zone information, this parameter defaults to, the system automatically selects an Availability Zone.",
 		},
 		"master_region": {
 			Type:        schema.TypeString,
-			ForceNew:    true,
+			Computed:    true,
 			Optional:    true,
 			Description: "The zone information of the primary instance is required when you purchase a disaster recovery instance.",
 		},
@@ -334,6 +333,18 @@ func resourceTencentCloudMysqlReadonlyInstanceUpdate(d *schema.ResourceData, met
 		return err
 	}
 
+	immutableFields := []string{
+		"master_instance_id",
+		"zone",
+		"master_region",
+	}
+
+	for _, f := range immutableFields {
+		if d.HasChange(f) {
+			return fmt.Errorf("argument `%s` cannot be modified for now", f)
+		}
+	}
+
 	d.Partial(false)
 
 	return resourceTencentCloudMysqlReadonlyInstanceRead(d, meta)
diff --git a/website/docs/r/mysql_readonly_instance.html.markdown b/website/docs/r/mysql_readonly_instance.html.markdown
index bbd1c805b8..9371aa69e5 100644
--- a/website/docs/r/mysql_readonly_instance.html.markdown
+++ b/website/docs/r/mysql_readonly_instance.html.markdown
@@ -38,7 +38,7 @@ resource "tencentcloud_mysql_readonly_instance" "default" {
 The following arguments are supported:
 
 * `instance_name` - (Required) The name of a mysql instance.
-* `master_instance_id` - (Required, ForceNew) Indicates the master instance ID of recovery instances.
+* `master_instance_id` - (Required) Indicates the master instance ID of recovery instances.
 * `mem_size` - (Required) Memory size (in MB).
 * `volume_size` - (Required) Disk size (in GB).
 * `auto_renew_flag` - (Optional) Auto renew flag. NOTES: Only supported prepaid instance.
@@ -47,7 +47,7 @@ The following arguments are supported:
 * `fast_upgrade` - (Optional) Specify whether to enable fast upgrade when upgrade instance spec, available value: `1` - enabled, `0` - disabled.
 * `force_delete` - (Optional) Indicate whether to delete instance directly or not. Default is `false`. If set true, the instance will be deleted instead of staying recycle bin. Note: only works for `PREPAID` instance. When the main mysql instance set true, this para of the readonly mysql instance will not take effect.
 * `intranet_port` - (Optional) Public access port. Valid value ranges: [1024~65535]. The default value is `3306`.
-* `master_region` - (Optional, ForceNew) The zone information of the primary instance is required when you purchase a disaster recovery instance.
+* `master_region` - (Optional) The zone information of the primary instance is required when you purchase a disaster recovery instance.
 * `param_template_id` - (Optional) Specify parameter template id.
 * `pay_type` - (Optional, **Deprecated**) It has been deprecated from version 1.36.0. Please use `charge_type` instead. Pay type of instance. Valid values: `0`, `1`. `0`: prepaid, `1`: postpaid.
 * `period` - (Optional, **Deprecated**) It has been deprecated from version 1.36.0. Please use `prepaid_period` instead. Period of instance. NOTES: Only supported prepaid instance.
@@ -56,7 +56,7 @@ The following arguments are supported:
 * `subnet_id` - (Optional) Private network ID. If `vpc_id` is set, this value is required.
 * `tags` - (Optional) Instance tags.
 * `vpc_id` - (Optional) ID of VPC, which can be modified once every 24 hours and can't be removed.
-* `zone` - (Optional, ForceNew) Zone information, this parameter defaults to, the system automatically selects an Availability Zone.
+* `zone` - (Optional) Zone information, this parameter defaults to, the system automatically selects an Availability Zone.
 
 ## Attributes Reference