To provide a belt conveyor chute apparatus that can load granular substances on a downstream belt conveyor in equal thickness.

The belt conveyor chute apparatus transfers granular substances to the downstream belt conveyor from an upstream belt conveyor, comprising sidewalls, a bottom plate, and lid plates of a box shape whose top surface is open. Shape steels are passed parallel to the width direction of the downstream belt conveyor between the lid plates provided above both sidewalls. A plurality of shape steels are provided at random spaces in the longitudinal direction of the belt conveyor chute apparatus. Between respective shape steels, a plurality of partition plates, which divide the flow-down amount of the flew down granular substances, are provided so that the belt conveyor chute apparatus mounting position can be moved into the width direction and the angle is changeable in the downstream direction of the granular substances.