The invention discloses a novel separator feeder. One end of a discharging pipe communicates with a hopper, and the other end of the discharging pipe extends outwards; supporting feet are installed at the bottom of the hopper; a feeding threaded rod is installed in the hopper; one end of the feeding threaded rod is connected with a drive mechanism, and the other end of the feeding threaded rod extends towards the discharging pipe; the drive mechanism drives the feeding threaded rod to perform self rotation; an opening in the top end of the hopper is provided with a filter screen in a covering manner; a grate is arranged in the middle of the filter screen; meshes of the grate are smaller than those of the filter screen; a pair of oppositely-arranged anti-splashing assemblies vertically and upwardly extend on the opening along the edge of the feeding threaded rod in the axial direction; each anti-splashing assembly comprises a vertically-arranged supporting plate and an anti-splashing plate; the bottom end of each supporting plate is fixedly connected to the opening; one end of each anti-splashing plate is hinged to the top end of the corresponding supporting plate; the other end of each anti-splashing plate is connected with the inner side wall of the corresponding supporting plate through a spring; and the pair of anti-splashing assemblies are connected through two side plates. A plurality of metal brushes are arranged on spiral blades of the feeding threaded rod in the circumferential direction; one ends of bristles are fixedly connected to the spiral blades; and the other ends of the bristles extend outwards. The novel separator feeder is simple in structure, convenient to operate and capable of making sand and gravel difficult to splash out and improving the sand and gravel separating efficiency.