The nutrients of milk include protein, fat, calcium, phosphorus and so on, which can replenish the required nutrients for the body. Every 100g of milk contains 3.0g of protein, 3.2g of fat, 104mg of calcium, 73mg of phosphorus and other nutrients, which can replenish the nutrients needed by the human body and is good for health. Milk contains high quality animal protein, which can provide certain nutrients for the development and growth of the human body. In addition, the calcium and phosphorus ratio in milk is very balanced, which can provide sufficient mineral elements for the growth of human bones. However, in daily life, if you are allergic to milk, you may have an allergic reaction, which may result in symptoms such as skin rashes and difficulty in breathing. In case of lactose intolerance, the body is unable to fully absorb lactose and diarrhea and bloating may occur after drinking milk.