Operating system is the basic program for managing and controlling software and hardware system such as computers. It is the most basic system software that runs directly on the bare metal. Since its birth in the last century, it has been widely used in personal computers, servers, smartphones and other fields playing a vital role in our lives, work, and entertainment. Many universities in different countries offer operating system course, which provides a relatively complete introduction to the key functional modules of operating systems, from the history of operating systems to the implementation of core principles. This paper takes the operating system course of a foreign university as an example, and evaluates the teaching result of the operating system course from the aspects of the basic introduction, student training goals, performance evaluation standards and student feedback improvement measures, etc., analyzing and comparing with the actual teaching situation of this course in China.