Nausea and regurgitation may be caused by digestive system diseases, endocrine system diseases, urinary system diseases, blood system diseases, cardiovascular system diseases and gynecological diseases. 1. Digestive system diseases: chronic pharyngitis, neurosis, reflux esophagitis, esophageal cancer, acute gastritis, peptic ulcer, gastric mucosal prolapse, small bowel malabsorption syndrome, cholecystitis, cholelithiasis may have nausea and regurgitation symptoms. 2. Endocrine system diseases: these include hyperosmolar coma, diabetic ketoacidosis, hypoparathyroidism, hyperthyroidism, which may also have symptoms of nausea and regurgitation. 3. Urological diseases: chronic glomerulonephritis, kidney stones, renal tumors, pyelonephritis, uremia may have symptoms of nausea and regurgitation. 4. Blood system diseases: multiple myeloma and leukemia may also manifest as nausea and regurgitation. 5. Cardiovascular system diseases: congestive heart failure and myocardial infarction, may also have nausea and regurgitation symptoms. 6. Gynecological diseases: ectopic pregnancy and ovarian cyst reversal can cause nausea and regurgitation. 7. Neurological diseases: brain abscess, epilepsy, cerebrovascular accident, concussion, brain tumor can also be manifested as nausea and regurgitation. There are many reasons for nausea and regurgitation, in addition to the above factors, may also be related to medicinal factors, poisoning factors, etc., in addition to Meniere’s disease, glaucoma, neurological vomiting can also lead to nausea range, it is recommended that the patient to the regular hospital in a timely manner, under the guidance of a professional physician to clarify the cause of the disease.