For normal people, the moderate addition of pig liver in the dinner does not cause obesity, but excessive consumption may cause overweight or obesity, which is not conducive to good health. In addition, pig liver also contains some protein, carbohydrates, vitamin A, iron, etc. Each 100 grams of pig liver contains 129 calories, of which 19.3 grams of protein, 5.0 grams of carbohydrates, 3.5 grams of fat, vitamin A4972 micrograms, iron 22.6 mg, vitamin C20 mg. Pig liver can provide more high quality animal protein as well as eight essential amino acids. Meanwhile, pig liver has a high iron content and is an easily digested and absorbed animal iron, which can be an ideal food source of iron. However, pig liver itself contains a certain amount of calories, and any food that is consumed in excess and cannot be consumed will be converted into body fat, causing the body to gain weight. Pig liver belongs to a common food, which contains high cholesterol content, up to 288 mg/1000 grams, it is recommended that moderate intake of animal offal 2 to 3 times a month is appropriate, overconsumption does cause the body to intake of cholesterol is too high, especially patients with hypercholesterolemia, weight loss should not be consumed by the population.