The optimization grouping of demonstration experts is one of complex decision-making problems before making
feasibility study for momentous project. Therefore, according to the requirements on group of demonstration experts, this
paper proposes a mathematical model for selecting demonstration experts for the momentous project and develops an adaptive
genetic algorithm to solve it. A numerical example is examined to show that the constructed model and the developed
algorithm are validity and applicability to solve the problem. Other six alternatives on different criteria for this problem are
presented to decision maker. Finally, on the basis of analysis on property of the developed algorithm, a reasonable rang of
control parameters of the algorithm is given to solve such problem.