Helicobacter pylori is an important factor in inducing stomach cancer. In the early stage of stomach cancer, most people do not have uncomfortable symptoms, and some patients may have mild digestive symptoms, such as acid reflux, belching, and possibly vague pain. The symptoms of Helicobacter pylori-induced stomach cancer are the same. However, as the disease progresses, patients may experience typical adverse digestive symptoms as well as pain in the abdomen, and as the disease becomes more severe, they may also experience significant weight loss, loss of appetite, anemia, and fatigue. In the advanced stage, a mass may also be palpated in the abdomen, mostly in the place of the stomach, that is, under the raphe, and the patient may have difficulty in swallowing, vomiting overnight food and other manifestations.