Through clinical observation of a large number of cases, patients with gastric cancer may have red thorns on both sides of the tongue, dry tongue, dark red tongue coating, or patients with yellow and thick tongue coating, as well as black tongue coating, accompanied by symptoms such as bad breath and dry mouth, all of which may be signs of gastric cancer. When patients find that the color of tongue has changed, they should go to regular tertiary hospitals for detailed examination and timely treatment after diagnosis, so as not to aggravate the disease and miss the best treatment time. For the treatment of gastric cancer patients, if they are early stage gastric cancer patients with mild symptoms, they can undergo minimally invasive treatment through gastroscopy, which is more effective and the cure rate is about 90%; if they are middle stage patients, their survival rate will be greatly reduced after relative treatment, so they usually need surgery and adjuvant chemotherapy, in addition, they need to go to the hospital regularly for examination and adjust the treatment plan in time once they find any change in their condition. The program.