High temperature reactive synesis is a new way to produce metal/ceramic composite coating. The principle of high temperatu rereactive synthesis and some technologies of high temperature reactive synthesis coating were introduced, including SHS-centrifugal process coating, SHS melt-casting coating, reactive casting infiltration coating, gas-transport coating and reactive thermal spraying coating. Not only the manufacture process, properties and characteristics were analyzed, but also the main problems were put forward and the trend of development was expected.