In the past ten years,purchasing of services contracting (POSC) is the hot topic in Chinese academic circles.Nowadays,many researchers and scholars have put forward more insightful arguments on POSC.This paper summarizes necessity and connotation of POSC,risks of POSC,practical suggestions on the prevention of risks of POSC and the practical pattern of POSC.Considering the requirement of the national strategies,the study on POSC will focus on pluralistic research methods,promote a wider range of local practical pattern on POSC and improve the service quality evaluation and supervision system of POSC in the long run.