Abstract: Puts forward an improved particle swarm optimization (pso) algorithm based on multimedia data reasonable scheduling method, according to the priority of the request of multimedia data collection to determine, the scheduling time as target parameter of scheduling policy, to solve the optimal node set, to achieve the shortest scheduling time.General particle swarm optimization (pso) algorithm is analyzed, introduced to optimize the performance of the compression factor of learning factor and improved particle swarm algorithm is given individual fitness evaluation function, through the multimedia data pieces the size of the priority to choose the highest priority multimedia data, add it to the scheduling window.Using improved particle swarm algorithm to obtain the optimal node set, see it as an optimal dispatching strategy, so as to realize the reasonable scheduling of multimedia data.The simulation results show that the proposed method can make full use of the node bandwidth resources, greatly reduces the startup delay of multimedia and the load on the server, to strengthen the overall performance of the system.