diff --git a/tencentcloud/resource_tc_cbs_storage.go b/tencentcloud/resource_tc_cbs_storage.go
index ed3c1a681c..e98e0c1ac1 100644
--- a/tencentcloud/resource_tc_cbs_storage.go
+++ b/tencentcloud/resource_tc_cbs_storage.go
@@ -54,7 +54,7 @@ func resourceTencentCloudCbsStorage() *schema.Resource {
 				Type:        schema.TypeString,
 				Required:    true,
 				ForceNew:    true,
-				Description: "Type of CBS medium. Valid values: CLOUD_BASIC, CLOUD_PREMIUM, CLOUD_SSD, CLOUD_TSSD and CLOUD_HSSD.",
+				Description: "Type of CBS medium. Valid values: CLOUD_PREMIUM, CLOUD_SSD, CLOUD_TSSD and CLOUD_HSSD.",
 			},
 			"storage_size": {
 				Type:         schema.TypeInt,
diff --git a/tencentcloud/resource_tc_instance.go b/tencentcloud/resource_tc_instance.go
index 5e46f34bc0..9c1ce19749 100644
--- a/tencentcloud/resource_tc_instance.go
+++ b/tencentcloud/resource_tc_instance.go
@@ -178,7 +178,6 @@ func resourceTencentCloudInstance() *schema.Resource {
 			"instance_count": {
 				Type:         schema.TypeInt,
 				Optional:     true,
-				Default:      1,
 				Deprecated:   "It has been deprecated from version 1.59.18. Use built-in `count` instead.",
 				ValidateFunc: validateIntegerInRange(1, 100),
 				Description:  "The number of instances to be purchased. Value range:[1,100]; default value: 1.",
diff --git a/website/docs/r/cbs_storage.html.markdown b/website/docs/r/cbs_storage.html.markdown
index 9cd4778c16..f0723ebfe0 100644
--- a/website/docs/r/cbs_storage.html.markdown
+++ b/website/docs/r/cbs_storage.html.markdown
@@ -35,7 +35,7 @@ The following arguments are supported:
 * `availability_zone` - (Required, ForceNew) The available zone that the CBS instance locates at.
 * `storage_name` - (Required) Name of CBS. The maximum length can not exceed 60 bytes.
 * `storage_size` - (Required) Volume of CBS, and unit is GB. If storage type is `CLOUD_SSD`, the size range is [100, 16000], and the others are [10-16000].
-* `storage_type` - (Required, ForceNew) Type of CBS medium. Valid values: CLOUD_BASIC, CLOUD_PREMIUM, CLOUD_SSD, CLOUD_TSSD and CLOUD_HSSD.
+* `storage_type` - (Required, ForceNew) Type of CBS medium. Valid values: CLOUD_PREMIUM, CLOUD_SSD, CLOUD_TSSD and CLOUD_HSSD.
 * `charge_type` - (Optional) The charge type of CBS instance. Valid values are `PREPAID` and `POSTPAID_BY_HOUR`. The default is `POSTPAID_BY_HOUR`.
 * `encrypt` - (Optional, ForceNew) Indicates whether CBS is encrypted.
 * `force_delete` - (Optional) Indicate whether to delete CBS instance directly or not. Default is false. If set true, the instance will be deleted instead of staying recycle bin.