In the gear transmission with meshed medium belt,the contact of gear pairs is changed into the contact of high modulus gear with low-modulus medium belt from the contact of two high modulus gears contact,which results in that the wear mainly occurs in flexible medium belt.By applying the Archard adhesive wear theory,the wear mathematical model of the gear transmission with meshed medium belt was established.The solid model of gear transmission with meshed medium belt was established by Solidworks three-dimensional modeling software,and the structure static properties were analyzed.According to wear mathematical model and the distribution of contact stress,the wear loss of the medium belt was calculated by simulation.The results show that the maximum contact stress of the gear transmission with meshed medium belt occurs in the mesh node,the elastic strain occurs mainly in the medium belt,and the maximum strain occurs at the engagement node.The wear volume of medium belt is increased with the increase of load and sliding distance,the maximum wear loss occurs in the mesh node.On the gear mesh line,there is slightly different about wearing capacity at different nodes,and the maximum wearing capacity occurs at the edges.