The invention discloses a method for preparing novel vacuum high-pressure copper-chromium contact materials. The surface of a copper-chromium alloy metallurgically smelted is rapidly scanned by a laser beam and is surface-remelted, so that the novel contact materials with small grains and uniformly diffused granular chromium alloys are prepared. The copper-chromium contact materials prepared by the method are high in compactness, fine in uniformity, high in bonding strength and low in impurity content, and reliability of a vacuum switch can be effectively improved.