There are many clinical types of gastric cancer, as follows: 1) according to the location, it can be divided into cardia gastric cancer, gastric body gastric cancer and gastric sinus gastric cancer; 2) according to the pathology, it can be divided into adenocarcinoma, adenosquamous carcinoma, squamous carcinoma and undifferentiated small cell gastric cancer; 3) according to the severity of the disease, it can be divided into early stage and progressive stage gastric cancer, early stage gastric cancer means the lesion does not break through the mucosal layer or within the mucosal layer. After breaking through the mucosal layer, it is called progressive gastric cancer. Progressive gastric cancer can be divided into four types according to the morphology, including Bromann I-IV type. When upper abdominal pain occurs clinically, it should be differentiated from gastritis or cholecystitis, etc. The best method is to do gastroscopy test, which can detect the disease as early as possible.