Milk protein allergy has the potential to recover on its own. Usually, allergy symptoms can subside on their own after stopping the consumption of milk, but those with severe allergy need to be treated with medication in time. Allergy is due to the body’s physical differences. Some people will be allergic to milk, resulting in rashes, diarrhea and other symptoms. Most allergic diseases can recover on their own after avoiding allergens, such as stopping the use of milk. In severe cases, such as severe diarrhea, vomiting, or even gasping for air, symptomatic treatment should be taken immediately, including oral desensitizing drugs such as loratadine and cetirizine as prescribed by the doctor. Most children who are allergic to milk proteins can gradually reduce their allergic symptoms or even self-heal as they grow older, when the gastrointestinal barrier is established and the intestinal flora is perfected. However, if the child is still allergic to milk protein after the age of 5, the symptoms may remain with the child for life. Once a milk protein allergy is diagnosed, the child should strictly avoid the relevant foods. Breastfed babies can continue to breastfeed, but the mother should avoid milk products; if the baby is formula-fed, he/she should switch to deeply or completely hydrolyzed protein formula or amino acid formula as soon as possible.