Milk and its products are one of the important sources of protein, calcium, phosphorus, vitamin A, vitamin D and vitamin B2 in the diet. However, unhomogenized milk can cause abdominal pain in people with indigestion, so it is necessary to apply high pressure to the milk through homogenization and then release it instantly to break the protein and fat particles in the milk into smaller particles, meanwhile it has a certain emulsifying effect.The homogenized milk tastes more delicate, has better stability, and is easier to be digested and absorbed.