PROBLEM TO BE SOLVED: To obtain highly accurate distribution information of a relative permittivity in a wiring board formed by laminating a mesh-like fiber body, a synthetic resin and a signal wiring. SOLUTION: The present technology uses a design information input unit for prompting input of design information of a wiring board configured by laminating a mesh-like fiber body, a synthetic resin, and a signal wiring, and the design information. Based on the above, a wiring simulation device including at least a distribution information deriving unit for deriving distribution information of a relative permittivity in the wiring substrate is provided. [Selection diagram] Fig. 1
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