Abstract: According to the gas geological features of Chaohua Mine, from the geological structure, structure coal and seam gas, the paper analyzed the causes of the mine coal and gas outburst occurred.The results showed that the geological structure was the major geological factor to control the coal and gas outburst in Chaohu a Mine.In the geological structure zone and the near area, the stress concentrated, the seam thickness varied highly and rich partial gas formed the coal and gas outbur st danger zone .According to the gas geological law of Chaohua Mine, three coal and gas outburst prevention and control countermeasures, including the enhanced min e gas geological study, established reliable coal and gas outburst early warning system and enhanced seam gas drainage could provide the technical support to the saf ety production of Chaohua Mine.