At present, the traditional antiflow saturation loadsensitive hydraulic system commonly used by cranes has the disadvantages of slow response speed, poor speed accuracy and large energy consumption. In order to overcome these shortcomings, a crane dualspool pumpvalve cooperation pressureflow composite control hydraulic system was established based on the principle of electronic pressure compensation. The typical load principle of the crane was analyzed, and a multimode control strategy with the handle opening signal as the threshold was proposed. The AMESim simulation model of the traditional antiflow saturation loadsensitive hydraulic system was established and the correctness of the simulation model was verified through experiments. The AMESim simulation model of the dualspool pumpvalve cooperative pressureflow composite control hydraulic system of the crane was established. The simulation results show that compared with the traditional antiflow saturation loadsensitive system,when the dual-spool pumpvalve cooperation pressureflow composite control hydraulic system with the main valve and the small flow servo valve is in the singleaction micromovement mode of the luffing cylinder, the speed tracking error is reduced by 26.2% and 56.5% respectively; the speed tracking error of the system with the main valve and the small flow servo valve is reduced by 46.1% and 69.8% respectively in the singleaction micro-motion mode of the winch motor