Nausea and hiccups are usually caused by gastrointestinal dysfunction, indigestion, chronic gastritis and other factors. When food enters the stomach, the stomach will grind, stir and empty the food through peristalsis. In the case of gastrointestinal dysfunction, not only will the digestion of food be affected, but some patients will even have the phenomenon of retrograde peristalsis, and once retrograde peristalsis occurs, the patient will not only experience nausea, but also hiccups due to the stimulation of the diaphragm. In the case of dyspepsia, when food is ingested into the stomach, the digestive juices are relatively little, so it is not possible to digest and empty the food in the stomach in time. When the food in the stomach is neutralized with the digestive juices, a large amount of gas is produced by bad fermentation, resulting in excessive expansion of the stomach, which leads to nausea due to the increased pressure in the stomach. This can also cause hiccups when the stomach is overdilated. Some people suffer from chronic gastritis, which causes congestion and edema in the gastric mucosa. In addition to causing stomach pain, chronic gastritis also affects the stomach’s digestive function of food, and many patients with chronic gastritis also have symptoms of nausea and hiccups.