There are many causes of breathlessness and stomach pain, mainly the following: First, various types of stomach diseases, such as acute and chronic gastritis causing symptoms of breathlessness and stomach pain, or superficial gastritis, erosive gastritis, ulcerative gastritis, etc. There are also duodenal diseases that can also show such symptoms, such as duodenal ulcer and duodenal cancer. Second, liver disease. For example, acute and chronic hepatitis, cirrhosis of the liver, primary liver cancer. Third, cholecystitis, gallstones, gallbladder cancer, pancreatitis, pancreatic cancer and other diseases may also show symptoms such as abdominal pain. Fourth, lung diseases. There are many diseases that will show this symptom, and further improvement of relevant examination is needed to clarify the diagnosis.