The causes of nausea and dry heaving include physiologic causes (including pregnancy) and pathologic causes (including gastroesophageal reflux disease (GERD), diseases outside the gastrointestinal tract, neurologic disorders, gastrointestinal colds, drug reactions, etc.). 1. Physiological causes: Women of childbearing age may experience nausea and dry heaving in early pregnancy. It will disappear in the second trimester of pregnancy and does not require special treatment. 2. Pathologic causes (1) Gastroesophageal Reflux Disease (GERD): Nausea and dry heaving caused by relaxation of the lower esophageal sphincter or increased pressure in the stomach due to various reasons, resulting in reflux of gastric acid and stomach contents. It is recommended to use omeprazole, domperidone and other drugs under the guidance of the doctor to relieve. (2) Extra-gastrointestinal diseases: such as food poisoning, intestinal obstruction, impaired liver function and other diseases, can cause nausea and regurgitation. Define the original disease, targeted treatment. (3) Neurological diseases: hypertensive encephalopathy, encephalitis, etc. can cause intracranial hypertension leading to nausea, dry heaving with dizziness, headache, etc.. You can use some central antiemetic drugs, such as Benadryl, under the guidance of the doctor. (4) Gastrointestinal colds: eating less, loss of appetite can increase stomach acid, causing nausea and dry heaving. Active treatment of colds, light diet. (5) Drug reaction: chemotherapy drugs, such as digitalis and antibacterial drugs, can cause nausea and dry heaving. You can use some brominapropionate to relieve nausea and vomiting under the guidance of your doctor. Nausea and dry heaving, to consider a variety of reasons, it is recommended to go to the hospital to clarify the cause of the disease, treatment. Drugs should be used under the guidance of a professional physician, not self-medication.