Abstract: A device for processing a three-dimensional image is disclosed. A cursor of a drawing tool is moved by using a plane pointing unit 30 and an overall depth pointing unit 31. A three-dimensional cell is specified in a three-dimensional space displayed on the a monitor 12. According to this specification, a display attribute of the three-dimensional cell, which is stored in a three-dimensional cell attribute information storage unit 23, is replaced with a predetermined attribute. A three-dimensional drawing unit 24 draws the three-dimensional cell in accordance with the attribute of the three-dimensional cell. As a result, a three-dimensional image is drawn and produced by means of the direct operation of the drawing tool. The image may be displayed in a three-dimensional manner, a rotational manner, or a two-dimensional manner of two or more layers. The shape of the object displayed can be recognized generally and easily.