To provide an sorting machine which can realize smooth transfer of an object to be conveyed from a conveyor on the upstream side onto a slat conveyor of the sorting machine without generating noise and increasing the height of the slat conveyor and hardly transmits the vibration of a chain to a slat easily.

In an sorting machine having a slat conveyor and a slide shoe 2 provided along each slat 1a, 1b of the slat conveyor in such a manner that it can move, each slat 1a, 1b is connected with a chain 3 individually through blocks 4a, 4b for connection, a guide part is formed in a lower part of the slats 1a, 1b, a shoe guide in which a projection part in contact with a curved face of these guide parts is formed is provided in each slide shoe 2. Moreover, each slat 1a, 1b is connected with the chain 3 through urethane bush. The projection part is divided into a central part and both side parts to make slide smooth.