1. If you need to save this template style as a template for your own use, you can directly click: File - Save As: Presentation Design Template (*.pot). Or directly save a new PPT file named for yourself, and then modify it in it.

2. If the template background you are talking about refers to the background image in the template, then the operation method is as follows:

(1) Save the PPT as a web page (save type is : web page) file.

(2) Enter the webpage save folder, preview the file as a thumbnail, and find the background image.

(3) Enter your own PPT, select: Insert - Picture - From File, locate and select the background image.