In recent years，more and more active safety systems have been developed.The scope of active safety research is no longer be limited in relatively basic chassis electronic control system （such as in ESC and ABS etc.）.It also includes some new intelligent systems，and some systems with great potentials will be developed in future.A variety of systems and control algorithms are closely integrated to make the vehicle become very intelligent to ensure people's safety and greatly change the way of people driving.At present，the ICVsare divided into DA，PA，CA，HA and FA five grades to meet the requirements of different levels of active safety technology.Active safety has played an increasingly important role in the protection of people's lives and property safety.Therefore，the world's major NCAP organizations have included active safety into the new car evaluation system.China has the advantages of population and Internet in the development of active safety technology.It also has the disadvantages of weak technology strength，lack of experience，and low technology level of parts etc..