Fuente: WIPO "industrial hemp" Provided is a method for preparing cannabidiol by means of high-speed countercurrent chromatography separation and purification, comprising alcohol extraction-water precipitation, adsorption with a macroporous resin, and high-speed countercurrent chromatography separation. By combining a macroporous resin chromatographic column and a high-speed countercurrent chromatograph, and optimizing process parameters, cannabidiol with a high purity is separated from flowers and leaves of industrial hemp, and a psychotoxic component, i.e. tetrahydrocannabinol, is also removed at the same time. The solvent used therein is environmentally friendly, has no remainder, is low in cost and is recyclable, such that the method is suitable for industrial production.