It is simple for Particle swarm algorithm which needs elementary mathematical knowledge to understand,but the working mechanism in the particle swarm algorithm is still not got completed and detailed analysis research.Which belongs to a kind of growing algorithm,PSO in optimization of complex multimodal function,will often fall into the local extreme points and other shortcomings.Chaos is the presence of nonlinear system of a relatively common phenomenon,randomicity,ergodicity and intrinsic regularity characteristics,especially the chaos ergodicity,the chaotic local search into the particle sw...