Aiming at the poor recovering mining technology of the coal and gas outburst mine in the early stage, led to the complexity design of remaining coal mining, outburst risk assessment was needed. No. 二1 coal seam west wing recovering mining of Longjinlong Mine in Henan Province was evaluation area. At present, the mine does not have the condition to carry out the gas basic parameter test, after collecting relevant basic data and comprehensive research and analysis, the evaluation results were as follows: There is no risk of coal and gas outburst in the mining area of No. 二1 coal seam west wing. The previous basic data played an important role in the risk assessment of coal and gas outburst without field conditions.