Middle and late stage primary lung cancer is very difficult to treat, with poor prognosis and short survival period, and there is no better treatment method at home and abroad. With the deepening of the understanding of Chinese medicine on lung cancer and the continuous improvement of clinical efficacy, Chinese medicine therapy has become one of the main methods for the treatment of middle and late stage lung cancer. According to Chinese medicine, the occurrence and development of lung cancer are related to the deficiency of positive qi and the prevalence of evil qi, and the deficiency of positive qi is based on the deficiency of qi, blood, yin and yang, while the prevalence of evil is based on heat toxicity, phlegm coagulation, qi stagnation and blood stasis, therefore, Chinese medicine is clinically divided into yin deficiency, internal heat, qi-yin deficiency, qi deficiency, phlegm-dampness and yin-yang deficiency. The treatment is based on the principles and methods of beneficial temperature and yang, nourishing yin and promoting body fluid, clearing heat and detoxifying toxins, softening phlegm and removing stasis. The advantages of Chinese medicine in the treatment of middle and late stage lung cancer are: 1) relieving symptoms, improving and enhancing the quality of life; 2) improving the immunity of the body and increasing the resistance of the body, thus enhancing the anti-tumor effect; 3) prolonging the survival period. 4.Inhibit tumor growth and stabilize tumor lesions; 5.TCM has toxic side effects on bone marrow suppression such as decrease in white blood cells and platelets, gastrointestinal reactions such as nausea and vomiting, and fluid deficiency such as dry mouth and red tongue caused by radiotherapy, and can increase and improve the therapeutic effects of chemotherapy and radiotherapy; 6.It has potential advantages in preventing recurrence and metastasis of lung cancer.