Hiccups and diarrhea may be caused by acute gastroenteritis, indigestion, chronic gastritis and other reasons. 1. Acute gastroenteritis: acute gastroenteritis is mostly caused by eating unclean food, bacteria and their toxins will affect the digestive function of the gastrointestinal tract, the accumulation of food in the stomach and the fermentation of gas stimulation of the diaphragm caused by hiccups, gastrointestinal peristalsis will also appear diarrhea phenomenon. 2. Indigestion: indigestion is mostly due to the delayed emptying of food in the stomach, and the fermentation of food produces a lot of gas, so there will be hiccups, indigestion also causes a lot of residual food to stimulate the intestinal tract, which can lead to the phenomenon of diarrhea. 3. Chronic gastritis: chronic gastritis is mostly due to stress, Helicobacter pylori infection and other factors, the lack of specific symptoms, there can be epigastric pain, loss of appetite, postprandial fullness, acid reflux, and so on, but also diarrhea and hiccups can occur. It is recommended to go to the hospital for examination to clarify the cause of the disease and timely symptomatic treatment.