Since 2016，the cyberspace game continues to ferment，the cyber security situation of critical information infrastructure is not optimistic，a few countries take measures to improve the military capacity of cyberspace，the global cyber security situation is still very grim. Safeguarding national cyberspace has become an international consensus，countries around the world attach importance to strengthening top-level design and actively carry out bilateral and multilateral cooperation. In the future，the relationship between China and the US will enter a new stage in the field of cyber security，the need to crack down on cybercrime will become more and more urgent，the safety of new technologies and applications will become increasingly prominent.