Weight loss stomach pain may be due to inappropriate dieting, gastric ulcer, gastric cancer, etc. According to the reasons, we can adjust the dieting method, take omeprazole and other drugs to inhibit gastric acid, radical resection and other ways to cope with the problem. 1. Inappropriate dieting: such as excessive dieting, taking inappropriate dieting drugs, etc. can cause stomach pain, which requires adjusting the dieting method, resuming normal diet or increasing the amount of food appropriately so as to make the diet more regular, temporarily stop taking dieting drugs and consulting with the physician for medication adjustment. 2. Gastric ulcer: it is a common disease that causes stomach pain, and it can be treated with drugs such as omeprazole to inhibit gastric acid and bismuth to protect gastric mucosa. 3. Gastric cancer: it can be treated by radical resection, partial gastrectomy, chemotherapy and radiotherapy. The medicines and surgery mentioned above should be carried out under the guidance of physicians. There may be other reasons for weight loss stomach pain, so you can go to the hospital for examination and take corresponding measures.