Feed for facilitating swimming crabs to breed red cream and preparation method of feed

The invention belongs to the technical field of feeds and in particular relates to a feed for facilitating swimming crabs to breed red cream. The feed comprises the following components in percentage by weight: 30-60 percent of fish meal, 10-30 percent of an adhesive, 1-5 percent of shrimp shell meal, 0.5-3 percent of Haematococcus algae powder, 0.2-1 percent of cassava modified starch, 0.2-1 percent of astaxanthin grease, 1-3 percent of fish oil, 2-6 percent of phagostimulant, 0.1-1 percent of carrageenan, 0.1-1 percent of xanthan gum, 0.02-0.5 percent of vitamins, 0.1-1 percent of choline chloride and 20-40 percent of water. According to the formula, the feed can provide basic nutrient elements required in the cream breeding period of the swimming crabs; particularly, as the Haematococcus algae powder and the astaxanthin grease are added to the feed, the purity of the crab cream can be effectively enhanced due to natural astaxanthin substances contained in the red globose alga powder and the astaxanthin gre