Abstract: A great deal of experiments show that the effective stress reduce with the gas stress increasing while coal or rock contain gas. on the basis of the experiment, the paper link to the coupling theory equation between coal or rock and EME and study the coupling theory equation of coal or rock, gas and EME, using FLAG^3D method to calculate the coupling theory equation was brought forward, It is offered theory basic and a kind of new method to electromagnetic emission monitoring dynamic catastrophes phenomena such as coal or gas outbursts and rock outbursts.