First, open the PPT where you want to insert background music, and click Insert, Movie and Sound in the menu bar and the sound in the file.

Second, find the background music you want to insert, and then click OK.

3. Click OK, a picture of a small speaker will appear, and a message box will appear, which are "automatic" and "when clicked" respectively. Automatic means playing music automatically after the slide show starts, while in a stand-alone computer, you can only play music by clicking the icon. Let's take automatic transmission as an example.

4. Right-click the speaker icon after selecting the music playback mode, click "Edit sound object", select "Loop until it stops", and then click OK.

5. Right-click the speaker icon again, "customize animation" on the stand-alone computer, and then double-click the music.

6. Select "Start from scratch" in the menu; In "after ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….

Seven, finally play the slide show, music naturally begins, and then ends at the end.