The invention discloses snail meat and crayfish feed and a preparation method thereof. The feed is prepared from, by weight, 20-30 parts of dried snail meat, 40-50 parts of peanut meal, 15-25 parts of wheat bran, 5-15 parts of seaweed, 3-8 parts of fig, 5-10 parts of dried sweet potatoes, 2-8 parts of lemongrass, 1-5 parts of eriobotrya japonica, 2-6 parts of vervain, 1-3 parts of lichen, 4-8 parts of Chinese yam, 5-10 parts of dried chicken intestines, 3-8 parts of bombyx mori powder, 4-8 parts of cabbage, 2-5 parts of shepherd's purse, 1-5 parts of beet root, 2-4 parts of banana powder, 0.5-1 part of poria cocos, 3-8 parts of phagostimulant and a proper amount of water. According to the snail meat and crayfish feed, snail meat serves as the main raw material, all the components are effectively mixed, the formula is scientific and reasonable, requirements of crayfish in different growth stages can be met, the utilization rate of the feed is high, palatability is good, meat quality and nutrient value of crayfish can be effectively improved, quick growth of crayfish is promoted, and the sickness rate and the survival rate of crayfish can be reduced. Besides, the feed has little pollution to the environment of water, is low in cost, and has good environment and economic benefits.