To propose an arrangement control system wherein arrangement of products with changeable quality inside a warehouse can be controlled by a computer.

This control system determines arrangement of stock of the products changeable in quality inside the warehouse, and provided with a stock table for specifying contents of the stock and the inventory location in the warehouse; a transfer candidate specifying means for specifying one or more transfer candidates according to the stock table and the predetermined rules for transfer; a transfer candidate displaying means for displaying the transfer candidates with a priority according to the rules for transfer; a working result inputting means for receiving input of data regarding the stock actually transferred to another location among the candidates; and a rewriting means for rewriting the stock table using the inputted data.