The research on “Air DTH Hammer drilling technology” was carried out by the Bureau of Geology and Mineral Exploration and Development of Guizhou Province, which was a part of the scientific research project of “Application research on deep well drilling technology in Guizhou complex strata”. During the test process, some typical accidents happened, such as the hammerhead fracture, hard alloy tooth fracture, impactor blockage and blocking, mud ring wrapping, drill pipe sticking & burying and borehole bending. The causes of these typical accidents are analyzed in detail, and the systematic technical measures to avoid and solve these typical accidents have been formed. The results are proved good through field inspection and this paper gives a comprehensive elaboration on this achievement in order to provide reference for the similar construction.