Abstract: In order to control human-board system effectively, an implicit functional extreme problem based on the human-board equations was presented and its numerical method was also given in this paper. As far as practice and application areconcerned, we considered polynomial function as approximate optimum control function. In this way, the problem of implicit functional optimum point was converted to a problem of mathematical programming, which was solved by Mount Carlo method. In the end a standard pressing board control function was obtained.