Abstract: Aiming at the optimization problem of idling resource, squeezing task and loading balance in the traditional resource schedule of the cloud simulation, this paper presents cloud simulation resource scheduling strategy based on an improved Hungary algorithm.It overcomes the traditional Hungarian algorithm applies only to the lack of one-to-one resource scheduling and achieves the distribution scheme between many-to-one simulation tasks and cloud simulation resources, avoiding the resource loading balance at best.By extending the Cloud Computing platform CloudSim to test the simulation, the results show that this method can reduce the loading of computers in the cloud computing, and the resource utilization is improved too.