There is no clear definition of the term “fire” in Chinese and Western medicine. In general, as long as you are not allergic to crabs, moderate consumption of crabs will not adversely affect your body. Crab is rich in protein, fat, cholesterol, amino acids, calcium, sodium, phosphorus, potassium and other nutrients, of which every 100 grams contains 103 kilocalories of energy, 17.5 grams of protein and 126 milligrams of calcium, which in moderation can provide the body with the energy and nutrients it needs. However, those who are allergic to crabs should not consume them, and crabs should not be consumed too much at one time, otherwise they may irritate the stomach and intestines, resulting in gastrointestinal symptoms such as abdominal pain and diarrhea. If you experience discomfort after eating crabs, it is recommended that you seek medical advice promptly.