PURPOSE: To facilitate the management of the amount of cargos received by providing a producer-data inputting means and a same grade data inputting means on a cargo- receiving line for conveying cargo-boxes, and calculating the amount of the cargo received by the same grade based on the same grade data and the data on the amount of the cargos received.

CONSTITUTION: Producer bar codes are stuck on the outside of small boxes A in which plural fruits of the same grade are housed, the small boxes A are placed on a cargo-receiving conveyor 2, the producer bar codes are read by a handy scanner 7 in the cource of conveyance of the boxes, and data on the same grade of the fruits housed in the boxes are inputted by a keyboard 8. A classification part 10 for classifying cargos by the same grade is provided on a classification conveyor 3 downstream of the cargo-receiving conveyor 2, and box storing operation parts 11... are arranged downstream of the classification part in a zigzag pattern. Photoelectric sensors 12 are then provided on respective classification lines 10a-10c of the classification part 10 to count the number of the boxes received and passed through from the beginning of cargo-receiving to the completion of the cargo-receiving by producer and the same grade from their outputs and by means of a CPU, and thus to calculate the total amount of boxes received.