Despite of the many successful applications of backpropagation(BP),it has many drawbacks.For complex prob-lems,it may require a long time to train the networks,and it may run into local minima,and it may not train at all.Particle swarm optimization(PSO)algorithm is a global and stochastic algorithm based on population evolution which mode is sim-ple,it is effective method for optimization of complex modeling.The paper uses PSO algorithm as learning algorithm of neu-ral network used to solve parity problem.T...