In order to study the influence of tectonic coal to gas irradiation of coal, the gas irradiation of coal was explored with coal sample under typical geological structure absorbing gas with pressure under 0.1 MPa and 2 MPa. The result showed that with the decreasing of diameter of coal particles, coal gas irradiation of coal sample increased. The role of tectonic coal to coal and gas burst embodies the strength of coal body and coal gas irradiation.