The invention relates to sparus macrocephalus feed and a preparation method thereof. The sparus macrocephalus feed comprises protein source raw material, fat source raw material, sugar source raw material and auxiliary material and is characterized by further comprising 5% of gracilaria lemaneiformis powder in percentage by weight; the protein source raw material is selected from a group composed of fish meal, soybean meal and the mixture of fish meal and soybean meal; the fat source raw material is selected from a group composed of fish oil, soybean oil and the mixture of fish oil and soybean oil; the sugar source raw material is starch; the auxiliary material is selected from a group composed of composite vitamin, mixed mineral substance, microcrystalline cellulose, soybean lecithin powder, DL-methionine, monocalcium phosphate, choline chloride, ascorbic acid, sleeve-fish ointment, and the mixture of composite vitamin, mixed mineral substance, microcrystalline cellulose, soybean lecithin powder, DL-methionine, monocalcium phosphate, choline chloride, ascorbic acid, sleeve-fish ointment; the feed is composed of the following nutritional ingredients in percentage by weight: 41.7-42.4 percent of crude protein, 12.3-12.7 percent of crude fat, and carbohydrate, crude fibre, ash and moisture in balanced amount. The sparus macrocephalus feed provided by the invention has the advantages as follows: the weight gain rate and survival rate of sparus macrocephalus are higher, the using amount of fish meal is reduced, and the level of protein requirements of fingerling is reduced.