Analyzed the application-oriented personnel training requirements of communication engineering specialty and proposed a scientific practical teaching system. The system, dividing the practical skills of undergraduates into three levels: basic skills, professional skills and innovation abilities, applies experiments, curriculum design, practical training, social practice and technological innovation to cultivate students’ practical abilities. For putting the system into practice，the quality guarantee mechanisms, such as education conception change, expanding money input and construction of laboratory instructors, were discussed.