Abstract: Taking high gas and very close distance coal seams mining as the background, the theoretical analysis, numerical simulation and field application are used to study the influence of gas extraction of composite goaf in extremely close distance coal seams on gas migration of goaf and distribution of three-dimensional “three zones”. The results show that the gas extraction by ground drilling has a great influence on goaf oxidation zone; the larger of gas extraction amount by ground drilling is, the greater the oxidation zone range is. To choose the appropriate gas extraction amount can realize the effect of gas control, reduce air leakage in goaf, and reduce the scope of “oxidation zone”.