Abstract: The learning of SCM course is mainly divided into three parts:theory teaching,experiment in-class and curriculum design.In view of the three teaching links of single chip microcomputer,some existing problems and misunderstandings in the use of Proteus simulation software are pointed out,and then the correct use of Proteus simulation software in each teaching link is discussed.Finally,the limitations of Proteus simulation software are presented.Through analysis and demonstration,so that users can correctly view the application of Proteus simulation software in SCM teaching course.