The invention discloses a special growth-promoting feed for a crab. The special growth-promoting feed comprises the following raw materials: extruded soybean, mashed potato, wheat flour, corn germ meal, wheat bran, pumpkin powder, jujube powder, Tenebrio molitor powder, shell powder, maggot powder, mysid powder, powder of internal organs of a squid, razor clam meat, Corcyra cephalonica eggs, kelp powder, spirulina powder, lard, Zhiqi fungal substance, Bacillus subtilis, Bacillus licheniformis, vitamin E, vitamin C, peptidoglycan, astragalus polysaccharide, fructo-oligosaccharides, lactic acid, glutamic acid, phosphoric acid, a traditional Chinese medicine additive, compound trace elements and composite nucleotide and protein peptide. The special growth-promoting feed provided by the invention is reasonable in formula and comprehensive in nutrition, and can meet the growth needs of the crab, promote growth of the crab, improve the immune system of the crab, and raise the survival rate of the crab.