An electronic-substrate electrical design apparatus using a three-dimensional space can easily verify a complicated electrical design of an electronic substrate and can also reduce design errors. The electronic-substrate electrical design apparatus has: a setting means for setting a first position coordinate and a first direction coordinate with respect to a predetermined layer constituting a multilayer electronic substrate, the first position coordinate indicating a viewpoint position when viewing the layer, the first direction coordinate indicating a visual line direction; a control means for controlling the generation of a three dimensional display image of the electronic substrate obtained when viewing the layer on the basis of the first position coordinate and the first direction coordinate set by the setting means; a display means for displaying the three-dimensional display image generated by the control of the control. means; and an editing means for performing an electrical design of the electronic substrate on the three-dimensional display image displayed by the display means.
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