The invention relates to a method for designing a machine-liquid throttling control valve based on mechanism displacement speed planning. The method is characterized in that firstly a displacement sequence of a given execution mechanism is converted into a displacement sequence of a valve element of the machine-liquid throttling control valve, then a numerical differential is adopted for solving acceleration signals of the execution mechanism, and a kinetic equation of the execution mechanism is established; the kinetic equation of the execution mechanism is listed with a hydraulic system dominated equation simultaneously, and pressure data sequence at an inlet and outlet of the valve element is solved; the flow of the valve element is calculated; the valve element area sequence is calculated through the flow of the valve element and the pressure data sequence at the inlet and outlet, and then a change relation curve of the valve element area along with the valve element displacement is obtained according to the valve element displacement sequence; and finally, the geometrical shape of the radial throttling hole of the throttling control valve element is designed according to the change relation curve of the valve element area and the valve element displacement. According to the method, the composition is simple, links is few, the system reliability is high, the electric systemcan still work normally after the electric system loses efficacy, and the method can be suitable for a wider high-low temperature use environment.