If a one-and-a-half-year-old baby has fever and vomiting, it is likely to be caused by inflammation of the gastrointestinal tract. It is recommended to first use antipyretic drugs and drugs to protect the gastric mucosa, which are helpful for relieving fever and vomiting, such as oral ibuprofen granules and compound zinc-cloth granules, etc. When the baby’s vomiting symptoms are relieved after the stomach situation is under control. You can also use anti-inflammatory drugs as appropriate, such as amoxicillin granules or cephalexin granules, etc., which usually need to be taken continuously for 2-3 days for the anti-inflammatory drugs to work. If the baby is suspected of having a combined viral cold, antiviral medication, such as ribavirin granules, should be used promptly. If the baby vomits more serious, it is more difficult to take drugs, then you need to use intravenous drugs, but also need to cooperate with physical cooling, such as alcohol wipe armpits and groin, can play a very good effect of reducing fever.