Abstract: Military deception is an important part of strategic application. Combined with the characteristics of network attack and defense actions, the principle of network deception is analyzed, the winning mechanism of deception strategy in cyberspace defense actions is analyzed by using game theory for reference, the principles and research focuses of three kinds of main technical means, namely honeypot honey net, micmis defense and mobile target defense, etc. and the organization application method of deception strategy in the cyberspace defense actions are provided. The research results have theoretical value and practical guidance meaning for improving cyberspace defense efficiency.