Abstract: In order to retain the material roadway of 2709N working face to be the material roadway of 2710N working face in Jiyang coal mine, the goaf along the material roadway is filled with paste material made of compounding crushed gangue, fly ash and binder material by a certain percentage to construct the roadway-side support, and its width is 9 m. The retained roadway is stability and can meet the using requirements. It not only reduces the amount of roadway excavation, but also consumes large amount of gangue, and recycling resources 6 226.5 t. It achieves significant economic value.