Abstract: In order to study the load transfer caused by the instability of pillar in the process of room and pillar mining, the load transfer rate Ti is applied to study the load transfer rule. Through the establishment of a numerical simulation model, the influence of the vertical stress on the adjacent pillar body around the pillar body around the pillar can be compared and analyzed. The results showed that the adjacent pillar body is very easy to be at the center of the pillar body failure stress disturbance, have exponential function relationship between Ti and Li; have an important impact load W/H aspect ratio, extraction rate e, the roof stiffness Er and pillar body stiffness Ep are at the center of the pillar body failure caused by the transfer rate. The research results provide a certain reference for the better use of the pillar mining technology in the mine.