Abstract: The practical project is the key of the “Excellence Plan” in the course of application of the undergraduate education process.This paper analyzes the main problems of cultivating students' practical ability in domestic colleges and universities.Based on the CDIO(Conceive,Design,Implement and Operate) training mode,the author has improved and established a practical teaching system,which has an accurate positioning and clear characteristics.Integrated and optimized the traditional scattered curriculum content,and constructed the practical teaching system of “attention ability” of the practical teaching system.The research results show that the multi-layered modernization practical teaching system which is based on CDIO and modularization and multi-level has a significant effect on promoting and improving the practical teaching quality to undergraduates.