A highly efficient, accurate and high performance modeling support system 100 for modeling a control model necessary for simulating a control object is provided, in which a plurality of data sets stored in a first data base 121 for use in modeling a plurality of control models is divided into a plurality of sub data groups each having least statistical disparity from each other by data divider 114, and stored in a plurality of sub data bases, respectively in second data base 122. Modeling means 115 constructs a control model using data in one of the plurality of sub data groups, which is then evaluated by model evaluator 116 using data in another one of said plurality of sub data groups.