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In order to solve the problems of lots of operating concurrent tasks leading to the problems such as heavy load balance for some nodes, and therefore leading to the unbalance load and low efficiency of the whole system, a algorithm based on concurrency computing Shannon was proposed. Firstly, the deploy principle for virtual machine in Cloud computing environment was given and the computing for concurrency computing Shannon suiting for cloud computing and heteroid machine was given, then the migrating source physical node, migrating virtual machine and goal physical node when the system concurrency computing Shannon were introduced. Finally, the load balance algorism based on concurrency computing Shannon was defined. Using the cloud computing tool CloudSim to simulate the method in this paper, and it is proved it can effectively realize the node load balance, and compared with the other methods , it has the advantages such as low average response time, round resource usage and less load balance degree, so it has big priority. 