PURPOSE: To rapidly produce a three-dimensional matter to move the same to a prototype stage without performing the complicated focusing of a three- dimensional apparatus by forming successively adjacent cross-sectional laminated plates of the three-dimensional matter to the surface of a fluid medium capable of being changed in its physical state in response to synergistic energy.

CONSTITUTION: The surface of a UV curable liquid 22 is held to constant height in a container and a UV light spot 27 having intensity curing this liquid is moved over a working surface 23 in a programmed form. When the liquid 22 is cured and a solid material is formed, a lift stand 29 is lowered from the working surface in a programmed form. By this method, a new liquid 22 flows to the surface 23. A part of the new liquid is converted to a solid material by the programmed UV light spot 27 to be bonded to the material present thereunder. This process is continued until the whole of a three-dimensional matter 30 is formed. It is unnecessary to form the arrangement and drawing of a plan in this method.