Abstract: Aiming at the actual situation of a certain coal mine in Handan Hebei province,towards high alley pumping methane drainage Technology are studied:① numerical simulation for methane flow in the system towards high alley pumping methane drainage was carried out by FLUENT,vertical height of strike high-position alley above the roof and horizontal distance to the return in incline direction was determined.② during tunnel drainage,seal of the tunnel drainage system should be applied to improve the performance, the waterseal drainage system was proposed in this condition.. the paper there will be considerably instructional significance to the similar mine.