Causes of nausea after meals include physiological and pathological causes, physiological causes include early pregnancy reaction, eating stimulating food, etc.; pathological causes include gastritis, gastric and duodenal ulcer, cholecystitis, hepatitis, etc. 1. Physiological causes: women of childbearing age need to consider the early pregnancy reaction, due to hormonal changes will affect the decline in digestive function; eating stimulating food, depression, etc., can lead to gastrointestinal digestion and absorption function abnormalities. 2. Pathological causes: gastritis can also have acid reflux, stomach pain and other symptoms; gastric ulcer can also have stomach pain after eating; duodenal ulcer can also have stomach pain when hungry, stomach pain at night; cholecystitis can also have pain in the right back; hepatitis can also have jaundice, anorexia and other symptoms. For the situation of nausea after meals, it is recommended to actively consult a doctor to determine the cause in the light of individual circumstances.