Stomach pain and back pain are not necessarily stomach cancer, but may be duodenal ulcer or pancreatitis. Often, these diseases may cause stomach pain and back pain. If the condition of the patient is serious, he/she needs to go to the hospital for gastroscopy, which can clarify the condition of the patient’s stomach. In addition, if the patient’s pain is still aggravated, he/she needs to do CT of upper abdomen to further clarify the diagnosis. Generally speaking, stomach cancer has no special manifestation, and in early stage, most of the patients do not even have obvious clinical symptoms, only when the stomach cancer reaches the progressive stage will there be stomach pain, for example, when the stomach cancer reaches the progressive stage, there will be epigastric pain and weight loss, which are the most typical symptoms in clinic, but they should also draw enough attention.