Provided is a solid scattering apparatus, which is mounted on a solid supply unit, such as a fertilizer, manure, bay salt, and a deicing agent, to control the opening degree of a cover member and the inclination angle of a rotary circle plate, thereby controlling the scattering direction, scattering distance, and scattering range of solid. To this end, the present invention comprises: a motor； a rotary circle plate, which is shaft-coupled to the motor and has blades at a predetermined height to scatter solid when the solid is scattered； a cover member partially covering an outer circumferential surface of the rotary circle plate to scatter the solid in an opening direction； a frame to which the cover member and the motor are attached； and variable mounts which are rotatably installed on upper and lower ends of both sides of the frame, respectively, wherein the variable mounts control the inclination angle of the rotary circle plate by controlling the length between upper and lower sides when the variable mounts are attached to a solid supply unit. The variable mount includes a scattering angle control member for holding the front end of the cover member in an opened or closed state so as to control the opening width of the cover member. The variable mount includes a fixing bar rotatably installed at upper and lower ends of both sides of the frame； a variable bar for controlling the length of the fixing bar through pin coupling while accommodating the fixing bar； and a mount bracket provided at the rear end of the variable bar so that the mount bracket can be attached to the solid supply unit through a coupling hole. The frame has a prevention plate at a predetermined height so as to prevent the solid from frying toward the rear of the rotary circle plate. The blade has a brim with a predetermined width formed on an upper end so as to prevent the solid from going over backwards.본 발명은 비료, 퇴비, 천일염, 제설제 등의 고형물 공급수단에 장착하여 커버재의 개구 정도, 회전원판의 경사각 조절을 통하여 고형물의 살포방향, 살포거리 및 살
