The invention provides a white balancing method and device of a liquid crystal display panel. The method includes the following steps that a time sequence controller receives video source signals and determines the refresh rates of the video source signals according to the video source signals; the time sequence controller obtains corresponding white balancing data drive lists according to the refresh rates, wherein the different refresh rates correspond to different white balancing data drive lists; the time sequence controller conducts white balancing treatment on the liquid crystal display panel according to the obtained white balancing data drive lists. The white balancing data lists of the liquid crystal display panel can be automatically adjusted according to the changes of the refresh rates of a liquid crystal display device, and the high-quality display effect of the liquid crystal display device is guaranteed at different refresh rates.