Most of the hiccups in newborns belong to normal physiological phenomenon, but they may also be caused by congenital heart disease, diaphragmatic disease and other pathological reasons. 1. Normal physiological phenomenon: caused by diaphragmatic spasm contraction, newborns eat milk too fast or inhale cold air, will make the autonomic nerve stimulation, diaphragm involuntary contraction caused by hiccups, usually parents do not need special treatment, to improve the way of life to avoid, such as breastfeeding in time to burp, to control the speed of newborns to drink milk and so on. 2. Congenital heart disease: cause hiccups in newborns, such as congenital heart disease, the child sucks weakly when eating milk, difficult to feed, may be accompanied by shortness of breath, hiccups, excessive sweating and other symptoms. 3. Diaphragmatic disease: it refers to defects, infections or tumors of the diaphragm, which can lead to hiccups, spitting up, diarrhea and other symptoms in newborns. Newborn hiccups may also have 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.