Abstract: Combined with the characteristics of mine geological formation and mining technology, the extraction data of preliminary construction including 2 working faces and 10 wells of Guqiao Mine were used, to analyze and distinguish the favorable and unfavorable factors affecting the extraction effects, which could guide and optimize well structure and drilling arrangement of later construction of 2 working faces and 5 wells. Through the comparison and analysis on gas production before and after optimization design, the results showed that the optimized Ⅲ type drilling could adapt to Guqiao formations basically under the reasonable well arrangement way, and its drainage radius was about 250 to 460 m, thus achieved ideal drainage effect.