The utility model relates to a concrete production blanking and separating device, and belongs to the technical field of concrete production, the concrete production blanking and separating device comprises a discharging seat, a feeding hopper, a pushing driving part and a transverse driving part, a plurality of burr rollers distributed in a plane array are arranged in the feeding hopper, and a plurality of triangular partition plates distributed in a plane array are arranged in the discharging seat; a discharging hole is formed in the side face, facing the inclined face of the triangular partition plate, of the discharging base, a switch plate is arranged in the discharging hole, the pushing driving piece is connected with the discharging base and the switch plate, a slidable sealing plate is arranged on the side face, facing the inclined face of the triangular partition plate, of the discharging base, and the transverse driving piece is connected with the discharging base and the sealing plate. According to the falling material separating device for concrete production, large-particle raw materials are discharged into the collecting and discharging hopper through the discharging holes to be collected, the situation that isolated raw materials are inconvenient to clean during discharging due to direct isolation of a traditional isolating strip is avoided, meanwhile, weeds in the raw materials are cleaned, and the separating effect is improved.