Abstract：Rock burst is an open system and energy dissipation system with complex structure and behavior feature，and what excites this systematic evolution is the energy flow and information flow in this systematic ambient inside and outside. According to the mutation theory，as long as energy accumulation keeps a dynamic equilibrium with dissipation in coal body，the stored energy can be maintained at a normal level，and the medium of energy accumulation and dissipation in coal body—micro defect(fissure，hole，and etc.) would not unsteadily rupture to cause impact. Relieve-shot，a kind of effective measure，can release elasticity and reduce impact danger，whose effect can be tested through electromagnetic radiation.
