Stomach nausea and dry heaving may be caused by physiological factors such as diet, or pathologic factors such as pharyngeal diseases and digestive system diseases. 1. Physiological factors: when eating cold, spicy, greasy and other stimulating or indigestible food more, it will produce stimulation of the gastrointestinal tract, aggravate the burden on the stomach and intestines, stomach nausea and dry heaving. When the emotional tension is too much, it may lead to gastrointestinal dysfunction, nausea and dry heaving reaction. 2. Digestive diseases: chronic gastritis, peptic ulcer, gastroesophageal reflux disease, dyspepsia, gastrointestinal dysfunction, pancreatitis and other diseases may lead to gastrointestinal digestion and absorption and peristalsis function is impaired, so that the patient appeared in the stomach nausea and dry heaving symptoms. 3. Chronic pharyngitis: patients with long-term inflammatory stimulation of the pharynx, can make the patient appear pharyngeal foreign body feeling, when serious, can lead to gastrointestinal discomfort, stomach nausea and dry heaving. In addition, the presence of sexual behavior of women of childbearing age when the stomach is always nausea and dry heaving, should rule out the possibility of pregnancy. When the patient has long-term or recurrent nausea and vomiting, it is recommended to consult a doctor in time to identify the cause of the disease and carry out targeted treatment.