the traditional teaching material compilation method,belonging to "the perfect show method",shows that the related materials have been statifactorily solved all the problems in one field,with problem being not intentional displayed or intentional ingored,which can not inspire,or even inhibit,the sense and capacity of innovation of students.Teaching material compilation shall adopt the problem-based method to reveal the various problems in corresponding field,which will enable students to have innovative ideas,know the focus of innovation and forcefully promote student's ability of innovation.