Abstract: In order to select the suitable ventilation way for working faces in close and high gas coal seam group, the gas migration law in close and high gas coal seam group was studied in theory, the comparative analysis was carried out about the advantages and disadvantages of the common ventilation way analysis as well as its influence for gas extraction, the result showed that the Y type ventilation way was suitable for working faces in close and high gas coal seam group. After the ventilation way of the working face 24202 in Shaqu Coal Mine was changed from U + L type to Y type, the quantity of gas drainage had risen from 40 m³/min to 45 m³/min, the gas extraction rate had risen from 62.5% to 73%, and the daily yield of the working face had risen from 600 t to 1 800 t, the return air gas concentration of the working face had decreased from 0.8% to 0.5%, the phenomenon of gas overrun never happened. In a word, the rationality of the Y type ventilation was proved from the aspects of practice.