To manufacture containers, which can be utilized multi-functionally and multi-purposefully, by a manufacturing method wherein a body, which is made by extruding clay with extruding technique and the interior of the outer wall part of which is divided in multi-chamber with partition walls and, at the same time, the longitudinal direction of which is cut in arbitrary length and section, is finally fired so as to obtain the containers.

The gas between the necking K and the core of an extrusion molder is made possible for forming partition walls. The clay P fed to a hopper 11 is fed under pressure by the action of an auger part G and then extrusion- molded through the gap and, before being dried, cut at sections La and Lb so as to be turned into a body 1 cut in arbitrary shape and be fired in order to obtain containers.