Abstract: Cyber-Physical Systems(CPS) refers to the tight conjoining of and coordination between computational and physical resources,and will change the way in which we interact with the physical world. As the evolution of Internet of Things,CPS has attracted extensive attention of research institutions,government departments and community in china and abroad. This survey introduced and described the CPS of definition, system architecture and features, in addation,mainly studied and discussed the CPS of theory and technology hierarchy, the important challenges toward computer science technology and situation of researches,finally the future perspective of research trends was presented.

Key words: Cyber-physical systems,Computation resources,Physical resourccs,Internet of things