You need to confirm the type of compressed file first. Common compressed file format include zip, RAR, 7z, and so on. Each compressed file format has different usage methods. In general, you can identify the type of compressed file by its icon. For example, the icon of a zip file is usually a blue triangle with a bow and arrow, while the icon of a RAR file may be a blue square with a label and lock. After confirming the compressed file type, you can open the compressed file by following the following steps: 1 Use a common unzip software such as WinRaR, 7-Zip, etc. to double-click and open the compressed file. 2. Some compressed files may require a password to open. You need to enter the correct password to unlock the file. 3 If the compressed file contains an executable file, you need to confirm whether the file name contains illegal characters such as Chinese characters, numbers, letters, etc. to avoid the problem of not being able to open the compressed file. 4 If you can't open the compressed file using the above methods, you can try to search for relevant uncompressing tutorial on the Internet or consult the creator of the compressed file to solve the problem.