Baby hiccups are actually normal physiological phenomena. Because the newborn baby's nervous system is not perfect, sometimes feeding too fast, or inhaling cold air, the nerves will be stimulated, the diaphragm will undergo a sudden contraction, causing a rapid inhalation and making a "burp" sound, when rhythmically making this sound, this is what we call hiccups.

Ways to relieve hiccups
Pick up your baby, pat him gently on the back, and breastfeed him.
Pick up your baby and use one hand to tickle the baby's mouth or ear, or stimulate the soles of your baby's feet, and when your baby cries, the hiccups will naturally disappear.
Tease your baby with toys to distract him and reduce the frequency of hiccups.
There are great ways to prevent hiccups
Do not eat when the baby is crying, which can easily cause coughing, hiccups, and severely lead to suffocation.
Pay attention to the feeding posture. When feeding, your baby's body is in a straight line, head above his feet. When breastfeeding, avoid milk flowing too fast, artificial feeding should also pay attention to the mouth of the nipple is not too large, and make sure that the nipple is full of milk so that the baby does not swallow air.
Every time you finish feeding, you can tap your baby's back to make him burp, so that your baby's stomach will be more comfortable. It doesn't matter if the baby really can't beat it, but pay attention to see if the baby has leaked milk or spit up milk.
If the baby burps frequently and affects the baby's mental condition, eating, etc., the baby should be taken to the doctor for examination in time.