Abstract：In the future, the combat environment will be unmanned, intelligent and systematic. The background of the concept of Mosaic War is introduced; the relationships with the theory of OODA loop and the idea of decision centric warfare are pointed out; the core idea of Mosaic War and its application at the operational level and system construction level are analyzed. The key technologies are summarized to support the intelligent operation of mosaic warfare troops in terms of network information share, command and control of communication, as well as intelligent and hybrid decision making. Considering the advantages of Mosaic War in concealment and flexibility, and the deficiencies in communication, command & control and logistics, in order to delay and block the OODA fast closed loop, the countermeasures are proposed from the aspects of electromagnetic spectrum confrontation, intelligent algorithm and group confrontation.
