Hiccups are a common symptom in infancy. Babies breathe mainly abdominally and the diaphragm is part of the infant’s respiratory muscles. When the diaphragm contracts, the chest cavity expands, causing an inspiratory action; when the diaphragm relaxes, the chest volume decreases, causing an expiratory action. In the first few months after birth, the phytoncotic nerves regulating the diaphragm are not yet well developed, so when a baby eats milk too quickly or inhales cold air, the phytoncotic nerves are stimulated, causing the diaphragm to contract suddenly, resulting in rapid inhalation and a “burp” sound, which, when made rhythmically, is called hiccups. When this sound is made rhythmically, it is known as hiccups. The hiccups themselves do not have any adverse effects on the baby’s health. Prevent diaphragm: 1. Pay attention to feeding methods: avoid feeding your baby when he or she is crying, as it is easy for him or her to eat air when crying; avoid feeding your baby too fast, such as breast milk is too rushed to lightly clip the nipple to control the flow of milk; such as manual feeding, pay attention to the pacifier hole should not be too large, and the milk should be full of pacifier first to avoid inhaling air. 2. Pay attention to warmth: the food your baby eats should not be too cold, and you should be careful not to let your baby inhale cold air when you play. When your baby has hiccups, you can feed him or her some hot water, add more clothes to keep him or her warm or use toys to divert his or her attention. You can also stimulate your baby’s soles and make him cry to stop the sudden contraction of the diaphragm. Also remember to burp your baby after each feeding. Also be aware that small babies can get hiccups when they are tired, so make sure your baby rests at this time!