Crayfish is a common food in daily life, does not have the role of disease treatment, but can be supplemented with protein and other nutrients for the human body. Crayfish is a crustacean, decapod, crayfish family aquatic animals. Each 100 grams of crayfish contains 82 kilocalories of energy, 16.77 grams of protein, 1.2 grams of fat, 296 milligrams of potassium and 270 milligrams of phosphorus and other nutrients, moderate consumption can supplement the body’s nutritional needs and energy, especially its rich in high-quality animal protein. However, it is not recommended to overconsume crayfish, so as not to cause discomfort, such as bloating, diarrhea and other symptoms. Allergic to crayfish people are prohibited to take crayfish, so as not to induce allergies. It is recommended that the purchase of crayfish to buy in the regular channels, while the cooking time should not be too short. It is recommended to eat crayfish with staple food, fresh fruits and vegetables and other food to ensure that the food nutritional balance.