If you no longer need a tag, delete it in any of the following ways:

Log in to the management console.
Click in the upper left corner and select your region and project.
Under Computing, click Elastic Cloud Server.
On the Elastic Cloud Server page, click the name of the target ECS.
The page providing details about the ECS is displayed.
Click the Tags tab. Locate the row containing the tag to be deleted and click Delete in the Operation column. In the Delete Tag dialog box, click Yes.

Log in to the management console.
Under Management & Deployment, click Tag Management Service.
In the upper right corner of the page, click the username and select Tag Management from the drop-down list.
On the Resource Tags page, set the search criteria for ECSs and click Search.
In the Search Result area, click Edit to make the resource tag list editable.
If the key of a tag you want to delete is not contained in the list, click and select the tag key from the drop-down list. It is a good practice to select at most 10 keys to display.
Locate the row containing the target ECS and click .
(Optional) Click in the upper right of the Search Result area.
The resource list is refreshed and the refresh time is updated.

Exercise caution when deleting tags in a batch. After you delete the tags, they will be removed from all the associated ECSs and cannot be recovered.

Log in to the management console.
Under Management & Deployment, click Tag Management Service.
On the Resource Tags page, set the search criteria for ECSs and click Search.
Select the target ECSs.
Click Manage Tag in the upper left corner of the list.
In the displayed Manage Tag dialog box, click Delete in the Operation column. Click OK.
(Optional) Click in the upper right of the Search Result area.
The resource list is refreshed and the refresh time is updated.