Newborns hiccups after breastfeeding may be caused by too fast breastfeeding, central nervous system diseases, peripheral diseases and so on. 1. Breastfeeding too fast: If a newborn eats breastmilk too fast, he or she may eat a lot of air, which may lead to hiccups, but there are no other uncomfortable symptoms, which is a physiological phenomenon. 2. Central nervous system diseases: most common in meningitis, hydrocephalus, epilepsy, etc., due to the disease will lead to a certain stimulation of the central nervous system, thus causing hiccups. 3. Peripheral diseases: mostly seen in gastroesophageal reflux, may also be congenital heart disease on the diaphragm caused by certain compression. Newborns hiccups after breastfeeding, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.