PURPOSE: To provide the powder supplying device which is used for a powder dividing machine to covert this machine to an automatic machine.

CONSTITUTION: This powder supplying device has many cassettes 21 each housing powder, an actuating device 51 for discharging the powder by actuating the cassette 21 existing in a supplying position, a metering instrument 61 for metering the powder discharged from this cassette 21 and a moving mechanism for moving the many cassettes 21 through the supplying position. The respective cassettes 21 are constituted removable from the moving mechanism. As a result, the powder housed in the each cassette 21 is discharged by the actuating device 51 in the supplying position and since the discharge rate thereof is metered by the metering instrument 61, the powder is automatically supplied by the needed amt.