Abstract: As a chain drive system, the scraper conveyor is the main transportation equipment for coal production. The safety and reliability of the chain link will affect the entire fully mechanized mining work. To study the wear resistance and contact effect of the chain links, the ML-100C abrasive particle wear testing machine was used to conduct the counter-grinding test for different chain links materials under different heat treatment processes to study the wear resistance of different samples. Based on the wear information of the chain links in a ten-million-ton coal mine in Shendong, the models of the chain links with different wear levels were established, and the equivalent stress and deformation of the links were analyzed by the finite element method. The results show that the content of C, Cr, Ni, Mn and Mo in the alloy material is relatively increased, and the selection of a reasonable heat treatment process can effectively increase the wear resistance of the chain links by 10%-25%. The stress of the flat link is mainly concentrated on the shoulder, the outside of the curved arm and the inside of the straight arm, and the stress of the vertical link is mainly concentrated on the outside of the curved arm and the transition section between the straight arm and the curved arm. The deformation of the flat link and the vertical link is reflected in the contact part, and the deformation of the flat link is about 1.9 times that of the vertical link.