1. Sign in to qq first.
2. Select the contact and click the group.
3. Select the group for which you want to delete group information.
4. Open the dialog box. You can right-click the dialog box and click Clear Screen.
5. As shown in the figure, the group message has been deleted. But this is just a quick way to make it temporarily invisible, and it won't really delete the message sent before. If the group is closed and then opened, there will still be messages sent before.
6. To delete the message completely, click the clock icon in the dialog box, and then click Message Manager.
7. Select the message you want to delete, and then click the cross in the upper right corner.
8. Click OK.
9. Right-click the message record and select Delete More Records.
10, you can choose to delete all or a certain time period, and then click OK.