The invention discloses a distributing mechanism for a workshop conveyor, and relates to the technical field of workshop conveying equipment. The distributing mechanism comprises a distribution box, wherein a circular ring is rotationally connected to one inner side wall of the distribution box through a bearing, a plurality of connecting rods are fixedly connected to the circumferential side faceof the circular ring, an arc-shaped sieve plate is fixedly connected to one end of each of the connecting rods, a shaft rod is rotationally connected between the two opposite inner side walls of thedistribution box, a hanging rod is fixedly connected to the circumferential side face of the shaft rod, the lower end of the hanging rod is fixedly connected with a sweeping plate, and two distributing hoppers are symmetrically arranged on the other two opposite inner side walls of the distribution box and located below the two sides of the arc-shaped sieve plate. Through the design of the circular ring, the arc-shaped sieve plate, the shaft rod, the hanging rod, the sweeping plate and the distributing hoppers, the arc-shaped sieve plate is prevented from being blocked, the structure is simple, the automation degree is high, the screening efficiency of the distributing mechanism is improved, and the problems that an existing vibrating screen type distributing mechanism is low in screeningefficiency and prone to being blocked, and normal operation of the distributing mechanism is affected are solved.