Abstract: In recent years, the gas control method of “Y-type ventilation+ high drainage roadway” has been widely used with its superior control effect. Affected by the negative pressure of high extraction roadway, the air leakage law of working face is more complicated, which affects the effect of gas extraction. Taking Yuwu Coal Industry as the engineering background, Comsol software is used to simulate the air leakage law and gas extraction effect of different extraction positions and extraction negative pressure conditions of high extraction roadway, and the optimal layout position and extraction negative pressure of high extraction roadway are determined and verified on site. The results show that the negative pressure of extraction has a significant effect on the air leakage of the working face. When the negative pressure of extraction is 0 kPa, the airflow field in the goaf is fan-shaped, and deflects from the working face to the direction of gob-side entry retaining. With the increase of extraction negative pressure, the goaf in the range of 260-328 m of the working face tends to form a negative pressure interception effect, and a triangular reflux area is formed inside the goaf on the side of the gob-side entry retaining. The location of the high drainage roadway and the change of the negative pressure of the drainage mainly affect the air leakage wind speed in the 170 - 328 m area of the working face and the 0 - 140 m area of the gob-side entry retaining. The air leakage and gas extraction parameters of high extraction roadway under different extraction conditions are comprehensively compared and analyzed. When the extraction negative pressure is 11 kPa, the extraction position is 30 m horizontally and 35 m vertically, the gas extraction effect is the best. The field measured wind speed and gas concentration are consistent with the numerical simulation results.