The steps to add a QQ official account are as follows:

1. Open your phone, find QQ, click and enter.

2. After entering, find "Add" at the icon location, click and enter.

3. After entering, select "Find Official Account".

4. Enter the name of the public account in the icon position and click "Search".

5. Take "QQ Music" as an example, click on the official account you want to add and enter the next page.

6. Take "QQ Music" as an example, click on the official account you want to add and enter the next page.