1. An image editing method using an image editing apparatus for editing a three-dimensional image configured with a plurality of element figure surfaces, comprising: accepting the three-dimensional image to be edited; receiving specification of an element figure surface among the plurality of element figure surfaces; retrieving, by a computer, one of another element figure surface connected to the specified element figure surface among the plurality of element figure surfaces and another element figure surface included in the three-dimensional image except for the specified element figure surface; determining, by the computer, whether the retrieved another element figure surface has a specific relationship to the specified element figure surface; relating, by the computer, the retrieved another element figure surface determined as having the specific relationship, to the specified element figure surface; and preparing one object figure configured with the specified element figure surface and the related another element figure surface, and processing the prepared object figure as one unit to edit the three dimensional image.