A coupling device for a frame and bodywork is characterized by being composed of the bodywork, the frame, a bodywork traction seat, a hanging plate and a hanging hook plate. The hanging plate is welded to the frame, and hooks are arranged in the middle of the side wall of the hanging plate. The bodywork traction seat is welded to the bottom of the bodywork, the hanging hook plate is installed and fixed to the traction seat through bolts, spring cushions and a large gasket, hooks on the hanging hook plate and the hooks on the hanging plate are combined together, and therefore the coupling device for the frame and the bodywork of a rail car truck is formed. According to the coupling device, a rubber joint of an axle box pull rod and a hydraulic shock absorber are protected against damage, the lifting difficulty and potential safety risks after transferring or hoisting for maintenance or derailing of a car are avoided, the maintenance time is shortened, and economic benefits of an enterprise are improved.