Hiccups can be caused by dietary factors, but also by reflux esophagitis, functional dyspepsia, central lesions and other conditions. 1. Dietary factors: eating carbonated beverages, gas-producing food, etc. can cause hiccups, which is a normal physiological phenomenon. 2. Functional dyspepsia: the gastrointestinal peristalsis function of such patients is reduced, resulting in the inability to smooth and rapid emptying of food, which will accumulate in the gastrointestinal fermentation and gas, and then produce hiccups and increased exhaust. 3. Reflux esophagitis: it is caused by the reflux of gastroduodenal contents into the esophagus, which can stimulate the esophagus to appear belching, hiccups, heartburn, acid reflux and a series of symptoms. 4. Central lesions: brain tumors, encephalitis and other central lesions lead to the loss of inhibition of the reflex arc, causing diaphragmatic spasm, resulting in hiccups. Hiccups symptoms may also be other diseases affecting the phrenic nerve, after excluding physiological factors, we recommend that you go to the hospital.