During the hydraulic control unit of ESC (electronic stability control) working process, the main function of the solenoid valve is to adjust the wheel cylinder pressure precisely. However, the linear control mode which can not maintain consistency of control accuracy is susceptible to the state of the hydraulic brake system and the working environment of the solenoid valve, therefore, the stepped decompression control method was proposed, and control parameters were calibrated to realize the precise decompression control. Based on the analysis of the hydraulic valve spool force and hydraulic response characteristics of solenoid valve, it was pointed out that the pressure change rate can be obtained by adjusting pressure control status and duration time of the signal state of solenoid valve to provide basis for the realization of stepped decompression control. The pressure control state of solenoid valve adopted the delay opening and closing control method, which can avoid the frequent switching of the pressure control state between the decompression state and the holding pressure state. The duration time of the solenoid valve control signal state was affected by the pressure change rate and the switching delay phenomenon, in which the flow rate coefficient of the valve port affected the pressure change rate, the opening delay time and the closing delay time affected the switching delay phenomenon were calibrated by the test. With the help of a test bench, different pressure increase rates were tested when the cylinder hydraulic pressure was decreased. Results show that the proposed stepped decompression control method can make the cylinder pressure follow the target pressure well and the bias of experiment data can be maintained within 1MPa. At the same time, the control method had high control precision.