To provide a conveyor chute without producing clogging caused by minute particles from a bulk even when it is used for a long time.

This device is provided with the upper frame 11 arranged on the head end downward of a belt conveyor 4 for conveying the bulk in a roughly horizontal position, and a flexible body 12 with the upper and lower ends formed in a open and hollow shape with a material having a flexing property, and with the upper end peripheral part mounted on the peripheral part of the upper frame 11. A part of the bulk dropped from the head end of the belt conveyor 4 contacts with the flexible body 12 and oscillates it, and this prevents the minute particles of the bulk from adhering to the inner peripheral face of the flexible body 12.