To strengthen the cultivation of computer system abilities in local universities, the teaching of Operating System curriculum has been reformed and explored in this paper. First, the origin of computer system ability cultivation has been reviewed, the characteristics of the implementation process in local universities are analyzed. Then, the existing problems in training computer system abilities in the current Operating System curriculum are discussed. Finally, the reform measures of Operating System curriculum teaching are proposed in terms of four aspects which are course content, experiment teaching, teaching methods and course assessment. The teaching practice of Operating System curriculum shows that the proposed reform measures are of great significance to improve the cultivation level of computer system ability for students in local universities