The invention discloses an environment-friendly crab feed and a preparation method thereof. The environment-friendly crab feed is characterized by comprising the following raw materials in parts by weight: 23-28 parts of 
rapeseed meal, 25-30 parts of 
cottonseed meal, 20-25 parts of Chinese yam, 19-23 parts of 
pumpkin seed, 17-20 parts of oat, 16-19 parts of high 
gluten flour, 15-18 parts of egg shell 
powder, 27-34 parts of goat blood, 22-27 parts of 
swim bladder, 4-6 parts of broad bean sauce, 3-5 parts of rock candy, 5-8 parts of 
sunflower seed oil, 19-24 parts of seaweed, 18-20 parts of 
bitter gourd, 14-17 parts of hawthorn, 12-15 parts of yellow peaches, 3-5 parts of 
lavender, 1-3 parts of vervain, 0.7-1.3 parts of pseudo-
ginseng, 4-7 parts of phagostimulant, and a proper amount of water. According to the invention, the added high 
gluten flour can improve the flexibility and 
plasticity of the feed, and the 
rapeseed meal, the 
cottonseed meal, the 
pumpkin seed and the oat are rich in 
nutrition, have rich essential 
nutrition such as 
amino acid, vitamins and 
dietary fiber, can improve the intestines and 
stomach functions of crabs, and facilitate improving the 
appetite and 
digestion-absorption function of crabs; the feed provided by the invention is excellent in utilization ratio, high in nutritive value, simple in preparation and low in cost, avoids additives and improves the cultivation 
water quality.