Air DTH hammer reverse circulation drilling technology is often taken as the first scheme in large diameter boreholes and rescue holes construction because of its advantages of rapid drilling and strong cuttings carrying capacity without borehole wall being washed out. However because reverse circulation DTH technology is not enough mature with high manufacturing cost and short service life, the research on reverse circulation drilling technique with normal circulation DTH hammer is carried out and the process matching drilling tools are developed, including the improvement of the large diameter double-wall drill rod and the development of double-wall stabilizer, wind resistance ring and positive & negative joints. The practice of collapse accident treatment in Pingyi gypsum mine shows that the developed drilling tools can reach the expected goal and provide hardware support for the promotion of air reverse circulation drilling technology.