The method to import music from your computer to your iPhone is:

1. Download and install iTunes, the Apple assistant, on your computer.

2. Connect the mobile phone data cable to the USB interface on the computer.

3. After connecting, a prompt will appear on the phone screen: Do you trust this computer? Click Trust.

4. Open the computer resource manager and open Apple Assistant, as shown below:

5. In the opened interface, select music and click Import, as shown below:

6. Select the music you want to import.

7. Finally click OK.