Abstract: Mining under village is a difficult issue for the development of coal mine in our country. How to use a scientific, economical, rational method to mine coal under villages is a important topic of "under three" mining coal in our country. The roadway gangue filling mining is a new coal mining technology under buildings in recent years. It has a good protection to civilian buildings because of the good effectiveness of reducing subsidence. This article analyzes the application effect of the technology combing the field observation data. By computational analysis and curve fitting, the surface movement prediction parameters of the roadway gangue filling mining in the mine are also obtained.