It is mostly considered to be caused by inhaling too much air, cold weather, etc. It may also be caused by pathological factors such as central nervous system diseases, digestive system diseases, and other diseases. 1. Physiological factors (1) Inhaling too much air: If you eat too much, too fast, or in an incorrect breastfeeding position, you will swallow too much air, and then you will always burp to expel the accumulated air. (2) Cold weather: cold air can stimulate the local diaphragm, thus causing hiccups, just pay attention to keep warm. 2. Pathological factors (1) Central nervous system diseases: such as pediatric hydrocephalus, brain tumors, meningitis and other neurological disorders, it is easy to frequent hiccups. (2) Digestive system diseases: such as gastritis, esophagitis, gastroesophageal reflux, etc. can cause intestinal hypothyroidism, intestinal flora dysfunction and hiccups. (3) other diseases: such as intestinal obstruction, subphrenic abscess, acute appendicitis, etc. can cause diaphragmatic irritation or increased intra-abdominal pressure, thus appearing the symptoms of pediatric hiccups. If the symptoms of hiccups are not relieved for a long time, it is recommended to go to the hospital in time to find out the cause of hiccups and then actively treat it, so as not to delay the condition.