The invention discloses a special sea fish feed for high-density recirculating aquaculture and a preparation method of the special sea fish feed. The special sea fish feed comprises the following components: white fish meal, fish meal made in china, euphausia superba meal, whey powder, casein, methionine, L-lysine, refined fish oil, cod liver oil, vital gluten, corn starch, peanut meal, special microecologics, special algae powder, functional components, decavitamin and compound trace elements. The special sea fish feed is capable of enhancing the immunity of sea fish, improving the growth speed, the survival rate and the feed conversion efficiency, and reducing the occurrence probability of malformation and albinism, is low in bait coefficient, low in feed cost in the breeding process, and suitable for high-density recirculating aquaculture of the sea fish.