Lactose intolerance is caused by the lack of lactase in the baby’s body, which prevents it from digesting lactose properly. The fee will vary depending on the hospital you choose, and the cost will be around$500 to$900. However, there are various methods of examination, if the baby’s stool is tested, the cost is about 50 to 60 yuan. If the baby is diagnosed to be lactose intolerant, it is recommended to choose some sugar-free milk powder, or soy formula, or take some lactase when choosing milk powder for the baby.