Abstract: A new decomposition—coordination algorithm,which is very efficient for on-line hierarchical control of large scale dynamic system,is implemented on a distributed computer control system.In this implementation the amount of information exchange between the coordinator and the local agents is reduced.The computation in each local agent is also simplified.The convergence of the coordination strategy is very fast and the flexibility of allocating the computation tasks among local agents in the lower level is greatly increased.Through using local area network,the connection among microcomputers is more efficient and reliable.The advantages of the system are generality,extensibility and maintainability.Carefully designed experiments show that distributed computer control systems is a desirable implementation of the hierarchical control for large scale dynamic systems.