The invention provides a compound feed capable of improving the fatty liver and body colour of the marine fish. The compound feed comprises a premixed feed, a bile acid, curcumin and betaine, wherein the premixed feed comprises fish meal, soya bean meal, corn gluten meal, high protein flour, corn, shrimp shell meal, monocalcium phosphate, fish oil, liquid phosphatide, vitamin premixes, mineral premixes, and the like. Artificial marine-fish breeding experiments prove that the compound feed provided by the invention can meet the nutritional needs of marine-fish growth, effectively enhance the physique of the marine fish, improve the immunity of the marine fish, reduce the incidence of a fatty liver disease, and improve the body color of the marine fish, so that the body color of the marine fish is bright-colored and close to a wild natural color, thereby enhancing the quality of artificially cultured marine fish.