Drinking milk in moderation at night is not fat, but should not drink more; a long time to drink a lot of milk will be fat. Milk is a good source of protein and calcium, proper consumption can provide adequate nutrition for the body. 100 ml of milk contains 54 calories, of which 3.4 grams of carbohydrates, 3.2 grams of fat, 3.0 grams of protein, 12 micrograms of vitamin A, vitamin E0.21 mg, 109 mg of potassium, 104 mg of calcium, selenium 1.9 micrograms. However, it should be noted that a large number of drinking milk, milk protein, carbohydrates and fat will be converted into body fat and stored in the subcutaneous weight gain, so moderate drinking milk before bed does not lead to fat, but a large number of drinking milk will get fat. In addition, for the milk allergic people should be careful to drink, so as to avoid allergic reactions.