In view of the inaccurate detection of the tensile force value of the testing machine during the tensile test,the support compression device is easy to interfere with the rubber layer of the support,the guide and guard device are easy to deform and fail during horizontal shear,the support is difficult to load samples on the seat and data distortion caused by inaccurate positioning,a mechanical structure and the hydraulic system of the electro-hydraulic servo large-scale multi-function load-shear testing machine which could be used for the mechanical property testing and comprehensive test of the engineering rubber bearing were designed.The designed testing machine has the advantages of high strength of the reaction force frame,easy installation,high automation degree,accurate and reliable,stable operation and convenient testing,by which the working efficiency can be improved.