The invention discloses a soft-shelled turtle mixed feed, which comprises a juvenile soft-shelled turtle mixed feed, a young soft-shelled turtle mixed feed and a mature soft-shelled turtle mixed feed; the mixed feed comprises the following components with different formula amounts: fish meal, yeast, alpha-starch, squid organ meal, corn oil, fish oil, spirulina powder, composite vitamin, composite mineral salt and microcrystalline cellulose; the fish meal is imported white fish meal, the yeast is beer yeast, the soft-shelled turtle mixed feed is prepared by crushing, mixing, drying various raw materials and performing with granulation process; the protein content of the juvenile soft-shelled turtle mixed feed is 52%, the protein content of the young soft-shelled turtle mixed feed is 49%, and the protein content of the mature soft-shelled turtle mixed feed is 45%. Through the above mode, the growth requirement of soft-shelled turtle at each phase can be satisfied by the feed, and has the characteristics for promoting growth of soft-shelled turtle, increasing immunity and improving the meat quality, simultaneously, the bait coefficient is low, the culture cost can be effectively reduced, and the economic benefit is increased.