Dry vomiting can be caused by pregnancy, chronic pharyngitis, relaxation of the esophageal sphincter, and vegetative dysfunction. Dry vomiting is a type of vomiting and usually the patient will show vomiting movements. Dry vomiting in women of childbearing age is related to pregnancy. Pregnancy, under the influence of increased hormone secretion, can lead to early pregnancy reactions such as dry vomiting, nausea and vomiting, which are normal physiological manifestations. In patients with chronic pharyngitis, the sensitivity of the throat increases in the morning after waking up, so patients may experience discomfort in the throat and cause nausea and dry vomiting when brushing their teeth in the morning. In patients with a relaxed esophageal sphincter, food from the stomach and duodenum may reflux into the esophagus, causing discomfort in the throat and dry vomiting, which is also a symptom of plant nerve dysfunction. In addition, eating fried and hard food, which is difficult to digest after intake into the stomach, causes dry vomiting.