diff --git a/.changelog/3193.txt b/.changelog/3193.txt
new file mode 100644
index 0000000000..bf2482487f
--- /dev/null
+++ b/.changelog/3193.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/tencentcloud_mysql_instance: update `device_type` description
+```
\ No newline at end of file
diff --git a/tencentcloud/services/cdb/resource_tc_mysql_instance.go b/tencentcloud/services/cdb/resource_tc_mysql_instance.go
index 953b552af2..3e63360066 100644
--- a/tencentcloud/services/cdb/resource_tc_mysql_instance.go
+++ b/tencentcloud/services/cdb/resource_tc_mysql_instance.go
@@ -152,10 +152,16 @@ func TencentMsyqlBasicInfo() map[string]*schema.Schema {
 			Description: "Specify whether to enable fast upgrade when upgrade instance spec, available value: `1` - enabled, `0` - disabled.",
 		},
 		"device_type": {
-			Type:        schema.TypeString,
-			Optional:    true,
-			Computed:    true,
-			Description: "Specify device type, available values: `UNIVERSAL` (default), `EXCLUSIVE`, `BASIC`.",
+			Type:     schema.TypeString,
+			Optional: true,
+			Computed: true,
+			Description: "Specify device type, available values:\n" +
+				"	- `UNIVERSAL` (default): universal instance,\n" +
+				"	- `EXCLUSIVE`: exclusive instance,\n" +
+				"	- `BASIC_V2`: ONTKE single-node instance,\n" +
+				"	- `CLOUD_NATIVE_CLUSTER`: cluster version standard type,\n" +
+				"	- `CLOUD_NATIVE_CLUSTER_EXCLUSIVE`: cluster version enhanced type.\n" +
+				"If it is not specified, it defaults to a universal instance.",
 		},
 		"tags": {
 			Type:        schema.TypeMap,
diff --git a/tencentcloud/services/cdb/resource_tc_mysql_instance.md b/tencentcloud/services/cdb/resource_tc_mysql_instance.md
index ab9f95b790..a678bca2f8 100644
--- a/tencentcloud/services/cdb/resource_tc_mysql_instance.md
+++ b/tencentcloud/services/cdb/resource_tc_mysql_instance.md
@@ -32,6 +32,7 @@ resource "tencentcloud_security_group" "security_group" {
 }
 
 resource "tencentcloud_mysql_instance" "example" {
+  device_type       = "BASIC_V2"
   internet_service  = 1
   engine_version    = "5.7"
   charge_type       = "POSTPAID"
diff --git a/website/docs/r/mysql_instance.html.markdown b/website/docs/r/mysql_instance.html.markdown
index f6b5646a6a..c03c0b580a 100644
--- a/website/docs/r/mysql_instance.html.markdown
+++ b/website/docs/r/mysql_instance.html.markdown
@@ -43,6 +43,7 @@ resource "tencentcloud_security_group" "security_group" {
 }
 
 resource "tencentcloud_mysql_instance" "example" {
+  device_type       = "BASIC_V2"
   internet_service  = 1
   engine_version    = "5.7"
   charge_type       = "POSTPAID"
@@ -143,7 +144,13 @@ The following arguments are supported:
 * `availability_zone` - (Optional, String) Indicates which availability zone will be used.
 * `charge_type` - (Optional, String, ForceNew) Pay type of instance. Valid values:`PREPAID`, `POSTPAID`. Default is `POSTPAID`.
 * `cpu` - (Optional, Int) CPU cores.
-* `device_type` - (Optional, String) Specify device type, available values: `UNIVERSAL` (default), `EXCLUSIVE`, `BASIC`.
+* `device_type` - (Optional, String) Specify device type, available values:
+	- `UNIVERSAL` (default): universal instance,
+	- `EXCLUSIVE`: exclusive instance,
+	- `BASIC_V2`: ONTKE single-node instance,
+	- `CLOUD_NATIVE_CLUSTER`: cluster version standard type,
+	- `CLOUD_NATIVE_CLUSTER_EXCLUSIVE`: cluster version enhanced type.
+If it is not specified, it defaults to a universal instance.
 * `engine_type` - (Optional, String) Instance engine type. The default value is `InnoDB`. Supported values include `InnoDB` and `RocksDB`.
 * `engine_version` - (Optional, String) The version number of the database engine to use. Supported versions include 5.5/5.6/5.7/8.0, and default is 5.7. Upgrade the instance engine version to support 5.6/5.7 and switch immediately.
 * `fast_upgrade` - (Optional, Int) Specify whether to enable fast upgrade when upgrade instance spec, available value: `1` - enabled, `0` - disabled.
diff --git a/website/docs/r/mysql_readonly_instance.html.markdown b/website/docs/r/mysql_readonly_instance.html.markdown
index 5956ed594d..7714d29ec1 100644
--- a/website/docs/r/mysql_readonly_instance.html.markdown
+++ b/website/docs/r/mysql_readonly_instance.html.markdown
@@ -92,7 +92,13 @@ The following arguments are supported:
 * `auto_renew_flag` - (Optional, Int) Auto renew flag. NOTES: Only supported prepaid instance.
 * `charge_type` - (Optional, String, ForceNew) Pay type of instance. Valid values:`PREPAID`, `POSTPAID`. Default is `POSTPAID`.
 * `cpu` - (Optional, Int) CPU cores.
-* `device_type` - (Optional, String) Specify device type, available values: `UNIVERSAL` (default), `EXCLUSIVE`, `BASIC`.
+* `device_type` - (Optional, String) Specify device type, available values:
+	- `UNIVERSAL` (default): universal instance,
+	- `EXCLUSIVE`: exclusive instance,
+	- `BASIC_V2`: ONTKE single-node instance,
+	- `CLOUD_NATIVE_CLUSTER`: cluster version standard type,
+	- `CLOUD_NATIVE_CLUSTER_EXCLUSIVE`: cluster version enhanced type.
+If it is not specified, it defaults to a universal instance.
 * `fast_upgrade` - (Optional, Int) Specify whether to enable fast upgrade when upgrade instance spec, available value: `1` - enabled, `0` - disabled.
 * `force_delete` - (Optional, Bool) 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, Int) Public access port. Valid value ranges: [1024~65535]. The default value is `3306`.