The fall accumulated as No.2 coal fault in 7712 working face of Xingtai mine was analyzed and researched, measures of optimization design was carried out. In order to ensure safe mining in working face, avoid unsafe factors to demolition and transportation, as well as improve coal quality, air supplement roadway was designed optionally to make working face get rid of fault. After mining line reaching the fault position, centralized reduction technology was applied to shorten working face, which realized safety mining and provided reference for coal mines with similar conditions.