PURPOSE: To distribute bulk material uniformly, by obtaining a weight per distribution by dividing the total weight of the powdery material accommodated in a hopper by the required remaining number of distributions for every required distributing unit, and controlling a driving and feeding device, with said weight as a newly set feeding value.

CONSTITUTION: The weight of powdery material, which is sequentially fed to a receiving pan 5 is automatically measured by an electronic computer 8. At the positions corresponding to the electronic computer 8, a hopper 9, which accommodates the powdery material, whose total weight is electronically measured at the other place in advance, and a driving and feeding device 11, which feeds the bulk material in each hopper by a vibrator chute method, are provided. The weight per distribution is computed by dividing the total weight of the powdery material in the hopper by the required remaining number of distributions by a microcomputer. With this weight as a newly set feeding value, the driving and feeding device 11 is controlled. Thus the powdery material can be uniformly distributed.