PURPOSE: To prepare a layout of container for outer packaging cases very efficiently in accordance with a production planning without depending on the experience of workers, and concurrently set efficiently the kinds, the setting positions and the quantities required of load fall preventing members.

CONSTITUTION: The specification of each type and its required quantities for each outer packaging case required by packaging are stored in outer packaging case developing masters 21 and 22 in advance based on the quantities of members to be packaged within a specified period of time and their characteristics. It is then retrieved at a layout terminal 2 in order starting from the depth side of a container by artificial intelligence or an expert system whether or not there exists any space around outer packaging cases which have already been loaded, and any outer packaging case satisfying conditions that are stored in a loading condition table 10 in advance, is arranged in the space. Based on a layout for the outer packaging cases, and depending on the outer packaging cases adjacent to each case, the kinds, the layout positions and the quantities required of shoring members for fixing the outer packaging cases are determined by the layout terminal 2.