If you have nausea after eating, you should first rule out physiological factors, such as pregnancy in women. If physiological factors are excluded, pathological factors, such as chronic gastritis, gastric ulcer, cholecystitis, gallstones, liver disease, can be considered. Also, if symptoms recur, an electronic esophagogastroscopy must be performed to clarify the condition of the stomach and duodenum. In addition, systemic diseases, such as diabetic ketoacidosis or endocrine diseases, may also cause such symptoms, which need to be clarified by a comprehensive examination. At the same time, you need to pay attention to the diet, do not eat too much greasy and spicy food, so as not to stimulate the gastrointestinal tract and aggravate the symptoms, pay attention to good eating habits, you can eat some light diet, such as rice porridge or noodle soup to nourish the stomach.