Crayfish is rich in nutritional value, containing protein, minerals and other nutrients. Crayfish is living in fresh water in a kind of crustacean like lobster, the scientific name of the crayfish, also known as freshwater lobster, crayfish. Crayfish is a very popular cuisine, nutritious, fluffy meat, easy to digest, moderate consumption of crayfish is beneficial to the human body. Each 100 grams of crayfish contains 72 calories, of which 14.9 grams of protein, 1.0 grams of fat, 107 milligrams of cholesterol, 15 micrograms of vitamin A, vitamin B ₁ ₂ 2.12 micrograms of potassium 261 milligrams, 25 milligrams of calcium. Moderate consumption of crayfish can provide the body with high-quality animal protein, as well as a variety of minerals. However, the cholesterol content of crayfish is high, hypercholesterolemia, hyperlipidemia patients need to properly limit their intake. Crayfish allergy is prohibited. Crayfish consumption needs to be moderate, so as not to cause indigestion and other adverse reactions.