The invention discloses a lubrication type aluminum-cast valve rocker. The lubrication type aluminum-cast valve rocker comprises a rocker body. A shaft pedestal body is arranged in the center of the rocker body. A shaft hole is formed in the center of the shaft pedestal body. An oil filtering device is arranged at one end of the outer end face of the shaft pedestal body. The oil filtering device comprises an oil storage cavity, a ball body and an oil discharging cavity. An oil filtering hole is formed in the connecting end between the oil filtering device and the shaft pedestal body. Rocker rods are installed at the two ends of the shaft pedestal body. In this way, lubricating oil can be added continuously through the oil filtering device installed on the rocker body when the valve rocker works, the valve rocker and a valve rod can work in cooperation conveniently, the lubrication performance is improved, and accordingly the stability of the valve rocker is improved.