The front frame of the grader is the main load-bearing structure of the grader. At present, the front frame of the grader generally includes the front hinge block, the intermediate plate assembly, the cylinder and the rear hinge block, and the platform welded on the frame support. The front hinge hole on the front frame is located by three holes, which is difficult to process, and the coaxiality is difficult to ensure; The intermediate plate component of the front frame adopts a multi-plate welded box-type structure made of bent plates, which is complex in structure, difficult to splice and weld, complex in manufacturing process and high in manufacturing cost; The platform is directly welded on the frame support, so it is difficult to ensure the welding and surface quality of the platform. The utility model provides a structural form that can improve the existing front frame of the grader, so that its manufacturing process is simple, the quality is easy to ensure, and the manufacturing cost is low.