Nausea and vomiting after eating may be caused by physiological reasons, or it may be a precursor of acute and chronic gastritis, peptic ulcer, pyloric obstruction and other digestive diseases. 1. Physiological causes (1) Spoiled or irritated food: Spoiled or irritated food can cause physiological nausea and vomiting. (2) Early pregnancy reaction: If the patient is a woman of childbearing age, nausea and vomiting after eating, and there is a history of menopause, it is suspected to be an early pregnancy reaction, and it is necessary to improve the urine pregnancy test and gynecological ultrasound as soon as possible to confirm the diagnosis. 2. Pathological causes: Some gastrointestinal diseases such as acute and chronic gastritis, peptic ulcer, pyloric obstruction and other digestive diseases may cause nausea and vomiting after eating, which may be accompanied by long-term abdominal pain, loss of appetite and other symptoms. Seek medical attention as soon as possible for treatment of the primary disease. Nausea and vomiting after eating, there are other reasons, if long-term nausea and vomiting after eating symptoms, and a short period of time can not be relieved, to go to the hospital in a timely manner, after diagnosis for targeted treatment.