The baby’s nose needs to be cleaned after spraying milk. As the baby’s digestive system is not yet very well developed, the baby’s stomach volume is relatively small, and the stomach is in a horizontal position, the cardia opening is relatively loose, in the process of feeding, if the baby eats too quickly, eats too much or ingests a large amount of air, it is easy to cause the baby to have spit up symptoms. If the amount of spit up is relatively large, it will be sprayed out of the baby’s nasal cavity. In this case, it is important to clean the baby’s nasal passages in time to avoid inflammation caused by the growth of bacteria in the nasal passages. When cleaning the baby’s nasal cavity, you should use soft cotton dipped in warm water, after wetting gently into the baby’s nasal cavity dipping, to avoid damage to the mucous membrane of the baby’s nasal cavity.