The eel can still survive for a year and a half after "hunger", and the Cultured eels can live for up to 50 years. Eel has a high nutritional value, so it is called soft gold in water. It has been seen as a nourishing beauty product in ancient China and many parts of the world. Japanese in winter to eat delicious food Roasted Eel keep plenty of energy to drive away the cold. The eel is rich in nutrition, hectogram fresh water eel (100g) 61.1g, 16.4g, 21.3g, protein, lipid, ash, carbohydrate 0.1g 1.1g mineral 95mg (mg), vitamin 230mg, calcium, phosphorus, iron, sodium, potassium and other substances. "Palm" magic, "the San Hui Fang", "Compendium of Materia Medica", "the Japanese eating in the Kam" book were recorded eel magic therapeutic efficacy: tonic, warm, intestinal wind, detoxification, beauty, Yufeng, healing, waist kidney wet wet beriberi fengbi, inside governance, governance pass the corpse infixation gas strain, warm waist and knee, from Yang, treatment of malnutrition in children, the woman down to work.