Abstract: To research the dynamic evolutionary features when coal and gas outburst shock wave passes through right around the corner and barrier, the internal pressure, velocity and methane distribution in tunnel influenced by shock wave are simulated by computer. The results show that the wall in corner can reflect shock wave pressure and divide the wave surface into high and low pressure region, hence, the vortex and accelerating regions are formed. In addition, the turbulence intensity is enhanced and the wave velocity in transient area increases, and the second acceleration is formed near the second barrier. The enhance effect of barrier on front wave is decrease with the increasing of barrier range and barrier quantity, moreover, the excitation effect mainly focuses on the back of barrier. So rigidity outburst in the tunnel should avoid as possible as it can and unnecessary equipment pile must be eliminated in the process of tunnel construction.