Old hiccups may be caused by physiological factors, or by reflux esophagitis, indigestion, intracranial tumors, intracranial infections and other disease factors. 1. Physiological factors: hiccups can be caused by eating too fast, too much or drinking too much carbonated drinks, alcohol, etc., or by excessive excitement and tension. 2. Digestive system diseases: reflux esophagitis when the gastric juice reflux to the esophagus and other parts of the esophagus will stimulate the esophagus, resulting in hiccups; indigestion when the gastrointestinal peristalsis slows down, resulting in food in the digestive tract continues to ferment to produce a large amount of gas, resulting in the hiccups of the old situation. 3. Other diseases: intracranial tumors, intracranial infections and other diseases may stimulate the diaphragm, phrenic nerve, central nerve or vagus nerve and other parts of the diaphragm, resulting in spasmodic contraction of the diaphragm, causing sudden closure of the vocal folds followed by the sound of “uh”. If you are experiencing hiccups, it is recommended that you go to the hospital and ask your doctor to determine the cause of the hiccups after eliminating physiological factors.