PURPOSE: To efficiently perform supply-storage-picking consistently by arranging a flow rack having an unfilled-status sensor and a ranking sensor in a downward inclination and making the most downstream section a working shelf for automatic replenishment in an automatic-selection type picking device.

CONSTITUTION: When detection signals of an unfilled-status sensor 19 and a ranking sensor 21 are fed to a processing circuit not shown in the figure, they are processed in accordance with a predetermined program to decide the supply sequence, the drive of a supply mechanism 7 is controlled, and a container 11 fed with articles by the supply mechanism 7 and supplying them to a predetermined flow rack in accordance with the priority sequence is shifted to the container storage section 13 of an auxiliary shelf 3. This container 11 is shifted forward in sequence by its tare weight due to the downward inclination of the flow rack 5 and is held on the flow rack 5. According to this constitution, the whole work can be efficiently performed from first to last.