The causes of hidden pain in the right upper abdomen after eating may be gastritis, gastric ulcer, gastric cancer and other gastrointestinal diseases, or cholecystitis, gallbladder stones and other liver and gallbladder diseases. 1. Gastritis: this disease is mainly an inflammatory disease of gastric mucosa caused by alcohol, drugs and Helicobacter pylori infection, which is mainly manifested as epigastric pain, nausea and vomiting and other symptoms. 2. Gastric ulcer: gastric ulcer is an inflammatory defect of gastric mucosa, the lesion penetrates into the muscular layer of the mucosa or reaches deeper layer, which mainly manifests the symptoms of postprandial epigastric discomfort and epigastric pain. 3. Gastric cancer: Gastric cancer is a malignant tumor occurring in the epithelium of gastric mucosa, which is commonly manifested by epigastric discomfort, vague pain, acid reflux, nausea and vomiting, and in serious cases, symptoms such as emaciation, fatigue and vomiting of blood can occur. 4. Cholecystitis: cholecystitis often has the symptoms of right upper abdominal pain, fever, nausea and vomiting during acute attack. 5. Gallbladder stones: gallbladder stones are usually induced by obesity, high-fat diet, taking birth control pills and other factors, most of which are asymptomatic, and the typical symptom is paroxysmal colic in the upper abdomen, accompanied by nausea, vomiting and other symptoms. When the symptoms of eating the right upper abdomen hidden pain, it is recommended to go to the hospital in time to clarify the cause of the disease, under the guidance of the doctor for treatment.