Special solid lubricating drag-reducing material for drilling fluid. It features high temperature resistance, excellent lubrication, and stable chemical properties, and can evenly adhere to the wellbore and drill string surfaces, significantly reducing friction and torque, effectively preventing sticking and jamming. It also has plugging and wear-resistant effects, improves the smoothness of the mud cake, does not affect the performance of the mud system, and is widely used in deep wells, directional wells, and horizontal wells to enhance drilling efficiency and reduce downhole complications.