Due to the advantages of high efficiency,energy saving and environmental protection,high degree of integration and flexible control,the pump control servo system has been more and more widelyapplied in bionic robot,automobile,aerospace and other fields.Under complex working conditions,the uncertainty of model parameters,nonlinear characteristics and external disturbance put forward higher requirements for the pump control servo system.The composition,working principle of the pump control servo system and the characteristics of different control variable classification control modes were described.At the same time,the advantages and disadvantages of various control methods were compared.Finally,the research trend of pump control servo system in system composition,modeling method and control method was summarized.