Abstract: Based on complex method algorithms，genetic algorithms，parallel and hierarchical thinking，a friendly interface and calculation high reliability VC++ software is developed in order to solve complex design of a multi-objective，multi-discipline and multi-variable optimization problems using hierarchical parallel genetic algorithm or complex method algorithm，For a class of complex optimization problems which has over three integrated projects，the genetic algorithm，complex algorithms，a great deal of trials have been made with genetic algorithm，complex method algorithm，parallel and hierarchical genetic algorithm and parallel and hierarchical genetic complex method algorithm.The results show that hierarchical parallel genetic algorithm is the most efficient；It has provided a feasible method for solving complex engineering application problem.