With the development of informationization, more and more courses are arranged in the computer room. It makes the demand of teachers and students to the computer room real-time remote storage increasing urgent. This paper introduces the open source software ownCloud to build file cloud storage for computer room teaching, which is helpful to realize real-time remote storage function for teachers and students in school. This paper also describes the basic network environment and server environment of file cloud storage in detail, as well as the method of building ownCloud file storage in the LNMPenvironment and its application effect.