Biological puffing feed for river crabs

The invention provides a biological puffing feed for riber crabs. The biological puffing feed comprises choline chloride, table salt, dicalcium phosphate, squid powder, spirulina powder, corn starch, phagostimulant fish oil, loach powder, a complex vitamin additive, soybean meal, a solid microecological preparation, a complex mineral additive, phytase and a Chinese herbal medicine feed additive, wherein the solid microecological preparation is compounded by a solid bacillus subtilis microbial inoculum, a solid saccharomyces cerevisiae bacterium microbial inoculum, and a solid denitrifying bacterium microbial inoculum in the proportion of the solid bacillus subtilis microbial inoculum, to the solid saccharomyces cerevisiae bacterium microbial inoculum, and the solid denitrifying bacterium microbial inoculum being 3:1:1.5. Chinese herbal medicines are utilized, so that the immunity of the river crabs can be effectively strengthened; besides, the complex vitamin additive, the complex mineral additive and the phytase are matched, so that nutrient components in the crabs can be regulated, and the meat quality and the mouth feel of the crabs are improved. The solid microecological preparation can improve the water quality in the process of raising the river crabs, and the raised river crabs are mellow and delicious in the meat quality.