Abstract: Combined with the requirements of GB3836.2-2010,explosion-proof flame arrester principle,structure form,materials used and installation means of mine breathing and discharge fuluid Ex components are introduced.Requirements and methods of flamproof enclosure type test of its pressure capacity test,thermal test,not-transmission explosion test of interna lignition and other tests are analyzed.At the same time,a few notes in the process of designing,applying and testing process are discussed.