Abstract: The quality of gas extraction drilling hole sealing is one of the major factors affecting extraction effect. Aim to solve the problem of gas extraction sealing quality, on the basis of researching in hole sealing materials and technology, it has formed an unitized technology with new inorganic hole sealing material and sealing hole opener, further perfecting the "two sealing and one grouting" with pressure grouting hole sealing technology. Through field test applied in Baode coal mine, and in the 30 day inspection period test the drilling group average concentration reached more than 80%, the problem of hole sealing quality deficiencies in Baode coal mine is solved, and providing data reference and suggestion for the next step of choosing gas extraction from drilling hole sealing technology for Baode coal mine.