An inspection support method on inspection of a gas or petroleum-related production facility, by receiving registration of producer information on a producer that owns or manages the production facility, receiving registration of production facility information on the production facility, receiving registration of inspector information on each of a plurality of inspector candidates that are candidates to inspect the production facility, acquiring the registered production facility information on the production facility, acquiring the registered inspector candidate information on the inspector candidate, and outputting inspection-related information containing inspection schedule information on a schedule of inspection of the production facility by the inspector candidate, based on the acquired production facility information and the acquired inspector candidate information.