Gastric cancer is one of the most common malignant tumors, with a high prevalence among middle-aged men, 40-60 years old, and a male to female ratio of 3-4:1. In China, the incidence and mortality rate of gastric cancer are the highest among malignant tumors, and the incidence rate is on the rise. There is no specific name for stomach cancer in Chinese medicine, but according to clinical manifestations, it can be generally classified as “stomach pain”, “choking”, “regurgitation”, “accumulation”, etc. “It has no specific name for stomach cancer. In the Yellow Emperor’s Classic of Internal Medicine, a medical text written more than 2000 years ago, it is stated in the chapter of the Four Temporal Temperaments that “if one does not eat and drink, the diaphragm is blocked, and the evil is in the stomach and epigastrium.” Zhang Zhongjing in the “Jin Kui Essentials – vomiting retching unfavorable” speaks of “morning food and evening vomiting, evening food and morning vomiting, the persistent grain does not dissolve, the name of the day stomach rebellion. The pulse is tight and astringent, the disease is difficult to treat.” At that time, the disease was considered difficult to treat, with the deepening of understanding and practice, the treatment has also been further improved. The Jing Yue Quan Shu says: “The treatment of regurgitation …… must be based on supporting the righteousness and strengthening the spleen and nourishing the stomach.” In recent years, based on the inheritance of traditional Chinese medicine theory, many experts have put forward many views on the etiology and treatment of gastric cancer through their own exploration and practice, which has greatly enriched the theoretical basis of Chinese medicine in the clinical treatment of gastric cancer. It is generally believed that the etiology and pathogenesis of gastric cancer are mainly due to uncontrolled diet, emotional and moral disorders, internal injuries caused by labor and fatigue or external invasion of evil toxins, resulting in stagnation of qi, blood stasis, phlegm coagulation and toxicity, which are intertwined with the stomach and form gastric cancer. The author believes that although the location of stomach cancer is in the spleen and stomach, it involves the malfunction of large and small intestine, liver and gallbladder and other organs. It is caused by long-term dietary disorder and emotional discomfort. The disease is caused by liver and spleen stagnation and unrestrained qi, and then develops into qi stagnation and blood stasis, phlegm condensation and food accumulation, and all the evils contain for a long time, accumulate poison to become cancer, infiltrate the stomach and stomach, damage the stomach qi, and form the evidence of evil and positive deficiency. It is believed that deficiency of spleen and stomach, poor diet and stagnation of qi are the main pathogenic factors; the spread of cancer toxins and the dissipation of positive qi are the root cause and main pathogenic mechanism of tumor metastasis. At present, Chinese medicine treatment has achieved good results. In the treatment of gastric cancer, the author believes that “detoxification” treatment should be carried out throughout the treatment process. For gastric cancer, we use the Chinese herbs “Baihua snake tongue herb”, “half lotus”, “Shijiazhuang” and “calcined corrugated seed”. Gastric cancer is roughly divided into pre-cancerous, pre-operative, post-operative, post-radiotherapy or chemotherapy, and terminal stages. The pre-cancerous lesions are generally treated with evidence based on pathological factors such as dampness, heat, phlegm, depression, stasis, toxicity and deficiency; preoperative treatment is aimed at eliminating tumors, fighting cancer and shrinking masses; postoperative treatment focuses on nourishing the vital energy, improving the body’s immune function, strengthening the spleen and stomach, and reducing recurrence; the treatment in the late stage of radiotherapy or chemotherapy focuses on benefiting the vital energy and nourishing the blood, reducing toxic reactions, and improving the body’s sensitivity to radiotherapy and chemotherapy to increase the effect of radiotherapy and chemotherapy. At this time, although the tumor load is great, the patient’s vital energy is already deficient. At this time, the focus of treatment is not to eliminate tumor and fight against cancer, but to maintain the overall function, to strengthen the spleen and stomach, to benefit qi and blood, so as to improve the quality of life of patients as much as possible. In addition, the author often uses the medicine for gastric cancer, such as Horsetail, Citrus Aurantium, Green Peel, Chen Pi, Semen, Almond, etc., and adds fried grain buds, fried wheat buds, Jiao Shanzha, Jiao Shenqu, Chicken Neijin, etc., to regulate the spleen and stomach and descend; strengthens the spleen with raw Atractylodes, Poria, and raw Coix seeds; transports the spleen with products that awaken the spleen and dissolve dampness, such as Patchouli, Perilla stems, Lotus stems, and sand, etc., to aromatize turbidity, and bitter warmth and dry dampness with Jiang Hanxia, Jiang Houpu, and Cang Zhu; He also used Chai Hu, Scutellaria baicalensis, Scutellaria vinegar, Green Calyx plum, Lotus pedicel, Citrus aurantium and Mucuna pruriens to dredge the liver and regulate Qi. Hua also makes good use of the right medicine, such as Southern ginseng, Northern ginseng, Prince’s ginseng, Atractylodes macrocephala, Poria, Su stems, Lotus stems, Radix et Rhizoma pseudostellariae, Huanglian, Raw barley, Chinese wolfberry. For the treatment of advanced gastric cancer, the Six Gentlemen’s Soup is used to strengthen the body’s righteousness and enhance the immune function of the body, while the combination of phlegm and dampness can inhibit the growth of tumor. In conclusion, gastric cancer is one of the diseases of spleen and stomach in Chinese medicine, but it cannot be treated as general spleen and stomach disorders. The symptoms of gastric cancer include not only the abnormality of the elevation and elevation of the stomach, but also the specific lesion, i.e. the cancer. We should insist on the combination of disease identification and evidence identification to reflect the treatment characteristics of supporting the righteousness and eliminating the evil, and to achieve the purpose of eliminating the evil. In addition, gastric cancer is a local manifestation of a systemic disease, which has an extremely close relationship with the whole. Therefore, in the treatment, we should not follow the general rule that early stage is based on attacking, middle stage is based on both attacking and supplementing, and late stage is based on supporting the righteousness, but should closely follow the pathological mechanism of gastric cancer, which is based on deficiency and actuality, and the principle of both attacking and supplementing is good. In the treatment process, we should emphasize the examination of the evidence and the use of medicine, and actively adjust the function of the internal organs and qi and blood of patients, which can help eliminate or alleviate the clinical symptoms of cancer patients, improve the quality of patients’ survival and prolong the survival period.