Abstract: Particle swarm optimization(PSO) algorithm is one of the most powerful methods for solving unconstrained and constrained global optimization problems.Thinking of PSO algorithm is easy to trap into local minima in solving multimode function,it is incorporated new update velocities and trust region technique into the PSO algorithm,and proposed a new particle swarm optimization algorithm(NPSO).The proposed algorithm has not only the simple for implement of algorithm PSO,also the fast convergence and high computational precision.Simulation results and comparisons with the PSOC,standard PSO and CPSO show that the NPSO can effectively enhance the searching efficiency and greatly improve the searching quality.