Abstract: In recent years,coal roadway bolt net support is applied in large scale in China's coal mines support.The technology has many advantages than traditional shed shoring,which saves a lot of human,financial,reduces the labor intensity of workers,greatly improves the labor productivity.Bolt net support system of coal mine roadway has been generally promoted in the mining area of Northern China,and the support rate of coal roadway is up to 90%.This paper focuses on the successful experience of roof control and the development course of bolt net system in mining area of Northern Anhui.