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Aiming at the traditional cloud computing resource scheduling method only considering the latest finishing time of task, not concerning the power-aware and resource load balance, a method based on chaos particle swarm was proposed. Firstly, the mathematical model based on energy-saving and load balance was built, then a set of solution near Pareto front as the initial population, the improved particle swarm algorism was used to search the optimal scheduling scheme. When the optimal solution was not changed for two iterations, the chaos search was used to search to get the global optimum solution. The simulation in the CloudSim and Matlab environment shows the method in this paper has the average load balance distance as 0.156, and compared with the other methods, it has the good load balance performance and low energy consumption. It has strong feasibility.