PURPOSE: To provide a bulk solid measuring supply apparatus which enables the solving of problems of causing higher costs by adding a device for selecting or removing a container to the conventional conveying apparatus in the measuring and supplying of a fixed amount of a bulk solid and of complicating work of recovering the bulk solid stored in a conveying container rejected to be returned to a hopper again.

CONSTITUTION: A bucket 2 with the bottom thereof free to open or close is provided to receive a bulk solid dropping from a hopper 1 and a balance 3 to measure the bulk solid all with the bucket 2 supporting it. A moving device 6 is provided and lifts the bucket 2 from the balance 3 to weigh it. As the results of the weighing, the bucket is carried up to a recovery device 4 when rejection is determined and up to a conveying container 5 when acceptance is determined. A bucket opening device 7 is provided to open the bottom of the bucket 2 on the recovery container 4 or the conveying container 5 for dropping the bulk solid. A controller is provided to operate the moving device 6 and the bucket opening device 7 according to the results of measurement with the balance 3.