Abstract: Since 2012, the coal market demand continues to show the trend of the weak, coal sales volume continues to decline, coal sales price continues to fall. In the face of the weak coal market, Shengli Open-pit Coal Mine carried out the full implementation of lean management. Through the implementation of the scheme, optimizing personnel allocation, enhancing job skills, strengthening cost control, optimizing the mining scheme, innovating roadbuilding ways, strengthening risk pre-control, strengthening equipment management and a series of measures, digging the internal potential and decreasing cost and increasing benefit achieve significant results, which ensures the coal mine production and operation of a smooth operation.