Stomach cancer is not a contagious disease and is certainly not contagious. However, stomach cancer may be accompanied by Helicobacter pylori infection, which may be contagious. Therefore, you should pay attention to personal hygiene and avoid sharing dishes. If you have H. pylori infection, you need to standardize the anti-H. pylori treatment. After treatment, H. pylori becomes negative or the level of H. pylori is relatively low, which is not contagious and you don’t need to worry too much. Gastric cancer is the tumor with the highest incidence rate among malignant tumors in digestive system. Generally speaking, the treatment of gastric cancer needs to adopt comprehensive treatment plan based on radical surgery. Early or middle stage gastric cancer can be considered to be treated by radical surgery, which mainly involves total gastrectomy or most of the stomach. After surgery, the patient can be treated with adjuvant chemotherapy to control the development of the disease, which usually requires 4-6 courses of chemotherapy, and some patients can be treated with targeted drugs.