Abstract: The simulation, evaluation and optimization of an unlinear multicircuit pipeline system can be realized by solving an unlinear equation set whose scale grows exponentially with the scale of the network. With the exponential growth solving capacity of the genetic algorithm based on the schema theorem, application of the algorithm can give results of equation set in O(n) . The genetic algorithm can also solve the problem of network architecture optimization within feasible time. The process and result proved the validity of the schema theorem.