Frequent belching does not necessarily mean stomach cancer, and stomach cancer does not necessarily mean belching, and the two are not necessarily related. There are many reasons for belching: 1) dietary reasons, mainly when eating greasy and poorly digested food, which can lead to functional disorders. 2) stomach pathology, such as gastritis, gastric erosion, gastric ulcer, gastric polyp, and gastric cancer. 2, lesions of the stomach, such as gastritis, gastric erosion, gastric ulcer, gastric polyps and so on. 3. Gastrointestinal disorders caused by other digestive diseases, such as gallbladder stones and gallbladder polyps, may also occur. The typical manifestations of stomach cancer are stomach pain, emaciation, weakness, anemia and other consuming lesions. Some gastric cancers also have belching symptoms, but they cannot be diagnosed by these symptoms. The diagnosis of gastric cancer requires gastroscopic pathology or direct surgical pathology.