Each 100 grams of fresh eel contains about 80 grams of water, 347.5 kilojoules of calories, 18 grams of protein, 0.8 grams of fat, vitamin B20.2 (Beijing) ~ 2 (Shanghai) mg, 3.8 mg of niacin, vitamin E1.53 mg, calcium 11 (Zhengzhou, Henan) ~ 283 (Hefei, Anhui Province) milligrams of phosphorus 203 milligrams of iron 2.2 milligrams, in addition also contain Other minerals and lecithin, eel and other nutrients, rich in lecithin is the composition of the body's organs and tissues, cell membranes of the main components, but also brain cells indispensable nutrients; contains a special substance, "eel", can lower blood sugar and mediate blood sugar, diabetes has a better therapeutic effect, coupled with very little fat, and therefore is the ideal food for diabetics. The eel is an ideal food for diabetic patients.