Trusted computing is the new trend of information security today.This paper surveys the theory and technology of trusted computing.The development history of trusted computing
and the development of trusted computing in China are introduced in this paper
and then it analyzes some problems of trusted computing at present which are delay in theory research
some key technologies to be developed and lack of trusted software system.Some fields are worthy to be explored are pointed out including trust key technology
basic trust theory and application in trusted computing.