Abstract: Based on the definition of deep mining, this paper used numerical simulation methods, by setting up a 3D deep mining model, to analyze surface movement under long-wall mining condition. The 3D surface movement graphics can be used to quantify the surface movement and to describe it perfectly. The results match those with the probability integral method, and the whole process analysis of coal mining-strata damage-surface subsidence is realized. It is an important complement to the coal mining subsidence visualization work. Through numerical simulation, the deep mining surface movement characteristics are summarized and compared to the shallow and deep mining, and the influence radius of surface deformation and related indexes are discussed. Calculation of sinking coefficients under fully mining and not fully mining conditions used in the probability integral method and comparison with the traditional calculation methods show that the sinking coefficient is less than the traditional calculation results. The experience of the shallow mining subsidence coefficient is no longer suitable for deep mining. The sinking coefficient becomes smaller with depth increase. The causes of this change are analyzed.