An analysis purpose input means, an analysis process generation means, an analysis process display means, an analysis process execution means and an analysis process storage means are provided. Modeling techniques conforming to the analysis purpose, analysis techniques, analysis result evaluation techniques, information on computation period, cost and computer kind as limiting conditions associated with these techniques, and information on automation rate are stored in the form of an analysis information network in the analysis process database. Then, a plurality of analysis processes conforming to the purpose are determined and the period and cost for each analysis process are evaluated. An optimal analysis process conforming to the limiting conditions entered is displayed to guide the analysis work.