To control QQ Music on your computer on your mobile phone, you can try the following methods:

1. Use QQ Music Mobile Version: Download and install QQ Music Mobile Version on your mobile phone, Then log in to your QQ Music account. Open the QQ Music client on your computer and make sure your phone and computer are connected to the same Wi-Fi network. Select "Device Management" on your phone, then select your computer, and you can control QQ Music on your computer through your phone.

2. Use remote control software: Download and install a remote control software on your mobile phone, such as TeamViewer, AnyDesk, etc. Install the appropriate software on your computer and make sure both your phone and computer are connected to the same network. Through remote control software, you can remotely operate the computer on your mobile phone, including controlling the playback of QQ Music.

3. Use the QQ Music web version: Open the QQ Music web version (/) on your mobile phone and log in to your QQ Music account. Open the QQ Music web version on your computer and log in to your QQ Music account as well. Through the web version, you can control QQ music playback on your computer on your mobile phone.

I hope the above methods can help you!