The invention discloses a method and a device for setting speed regulator parameters. The method for setting the speed regulator parameters comprises the following steps of A, building a transfer model of a system; B, determining the speed regulator parameters needing to be analyzed, , wherein the speed regulator parameters are adjustable parameters; C, listing a corresponding open-loop transfer function, and drawing a root locus of a corresponding system characteristic equation; D, judging whether a dominant pole exists in the root locus, when the dominant pole exists, performing quantitative analysis on the frequency modulation performance of the system based on the adjustable parameters, and otherwise, performing qualitative analysis on the frequency modulation performance of the system based on the adjustable parameters; E, setting the speed regulator parameters by utilizing an analysis result. By utilizing the method and the device for setting the speed regulator parameters, influence on the stability and the transient performance of the system caused by the speed regulator parameters can be taken into consideration, so that the stability of the system is improved, and the performance of the system is improved.