PURPOSE: To commonly use for a flower vase, an art object, an interior, etc., to impart elegance and to diversify a containment by providing a port of an arbitrary shape at a vessel material, etc., in which a hollow state of an arbitrary section is molded by an extruding technique and a cover is fixed to both openings, or separating it into a plurality of vessels at the sectional surface of the arbitrary shape, an arbitrary direction.

CONSTITUTION: The method for manufacturing a vessel comprises the steps of fixing covers 12c to both openings of a body 11c extruded to be molded in a hollow state of a frame section of a rectangular shape to form a first vessel material 1c, cutting to separate the material 1c at a lateral separating curved surface P4, and then providing a port 13c at an end face of the surface P4 of one sidewall as vessels U51, U52 to be commonly used for a flower vase, an art object, an interior, etc.