The invention discloses crab fodder with fermented soybean meal. The crab fodder is characterized by comprising the following raw materials in parts by weight: 23-29 parts of buckwheat, 18-23 parts of grain sorghum, 19-24 parts of fermented soybean meal, 1-4 parts of calcium hydrophosphate, 5-8 parts of Chinese forest frog oil, 2-4 parts of glycine zinc, 28-35 parts of chicken, 20-25 parts of cured goose, 2-4 parts of fresh taste soybean sauce, 13-15 parts of green plum, 15-18 parts of honey-dew melon, 19-23 parts of lysimachia clethroides, 0.2-0.5 part of rhizoma cyperi, 0.5-0.8 part of cedrela root skin, 0.2-0.4 part of artemisia ordosica root, 0.1-0.3 part of Korean ginseng, 0.05-0.3 part of potassium sorbate, 3-6 parts of phagostimulant, and a proper amount of water. The crab fodder is added with the fermented soybean meal, has unique fermented fragrant taste, is good in food attracting property, improves flavor of fodder, increases appetite of crabs, forms addiction of the crabs after long-term use, improves feed intake of the crabs, promotes growth, and reduces material consumption; the cultivating survival rate of crabs can be improved by long-term consumption of the fodder.