Abstract: The coupling relations of all variables during the micro turbine running with regenerator are discussed.Since the parameters are always changing during micro turbine running and the running course is complex,the scheme for turbine running control using decoupling control algorithm is proposed.And BP neural network is applied in the decoupling control.Combining with traditional PID control,a new algorithm of BP neural network decoupling control is given.In the new algorithm,the decoupling neural network is put ahead the adjustor.The results of simulation show that the algorithm can work effectively.