1. Causes of hiccups in babies: Hiccups in babies are caused by excessive gas accumulation in the stomach and the gas is expelled from the body through repeated hiccups. This condition is very common in newborns and young children and usually does not cause much impact on the baby. However, if hiccups last too long or occur frequently, they may cause discomfort and pain to your baby. 2. How to help the baby relieve hiccups 1. Keep the baby in the correct posture: When feeding, the baby should be kept in the correct posture to avoid swallowing air. When feeding, keep the mouth of the bottle facing downwards