A feed throwing device for outdoor poultry rearing comprises a box body, a feed box, a special-shaped cam, a valve, an ejection plate and a return spring. The feed throwing device for outdoor poultry rearing is characterized in that the surface of the top of the box body is inwards turned to form guiding oblique planes, a throwing opening is formed between the two opposite guiding oblique planes, the top of the box body is provided with a flow guiding groove in an inward and oblique extending mode, and the bottom of feed box is open to communicate with the flow guiding groove; a storage battery and a controller are arranged at the bottom inside the box body, a stepping motor is arranged on one inner side face of the box body, one end of a special-shaped cam rotating shaft is connected with a stepping motor coupling, and the other end of the special-shaped cam rotating shaft is connected with a bearing arranged on the inner side face of the box body; the valve penetrates through the flow guiding groove, a rotating shaft is arranged between the lower portions of the two side faces of the box body, the ejection plate is rotatably connected with the rotating shaft, one end of the ejection plate is rotatably connected with one end of the return spring, and the other end of the return spring is rotatably connected with the inner bottom face of the box body. Manual feed throwing is replaced, timing throwing can be conducted, and the labor cost is reduced.