Lung cancer patients should cooperate with traditional Chinese medicine treatment as much as possible during radiotherapy or chemotherapy. It is because radiotherapy or chemotherapy, while killing tumor cells, will also produce toxic and side effects on normal tissues of human body. Traditional Chinese medicine can effectively reduce the side effects of radiotherapy and chemotherapy, alleviate the pain of patients and improve the completion rate of radiotherapy and chemotherapy. Radiotherapy is one of the main means of treating lung cancer at present, which uses the killing effect of rays on cells to kill the malignant cells in the body, so as to achieve the purpose of treating malignant tumors. For patients with localized lesions that cannot be operated due to some reasons, radiotherapy becomes more important means to treat tumors; for advanced patients with severe pain caused by localized lesions, local palliative radiotherapy is also a useful choice. The most common complication of radiotherapy for lung cancer is radiation pneumonitis, which often leads to decreased quality of life of patients. In mild cases, it is asymptomatic and the inflammation can dissipate on its own; in severe cases, symptoms such as severe and incurable cough, fever, chest pain and breath-holding will occur, and finally the lungs will undergo extensive fibrosis, leading to respiratory function impairment, or even respiratory failure and endangering the life. Chinese medicine has a unique advantage in improving the adverse reaction of radiotherapy and increasing the effect of radiotherapy. Under the guidance of identification and treatment, according to the different manifestations of the patient’s evidence-based treatment, together with dietary modification, it has a significant therapeutic effect on alleviating the symptoms of radiotherapy patients and accelerating the repair of normal tissue cells. Chinese medicine believes that radiotherapy is like “fire”, which is most likely to injure yin and consume fluids, and damage veins and collaterals. During radiotherapy, taking traditional Chinese medicines that benefit qi and nourish yin, activate blood circulation and remove blood stasis can increase the effect of radiotherapy, reduce the incidence or severity of radiation pneumonitis, and promote the recovery after radiotherapy. The main side effects of chemotherapy include gastrointestinal reactions, bone marrow suppression, and liver and kidney function damage, which are directly manifested as nausea, vomiting, loss of appetite, gastric distension and discomfort, hunger, aversion to grease, abdominal distension, constipation, anemia, leukopenia, and so on. The use of “leukostimulating injection” (recombinant human granulocyte colony-stimulating factor) is often used because of the decrease in white blood cells caused by bone marrow suppression, or because of the decrease in white blood cells, which leads to infections, fever, etc., or even because of the interruption of chemotherapy due to serious side effects. During chemotherapy, patients often lose weight due to nausea and vomiting, which leads to weakness, physical inability and decreased immune function, which is not conducive to the treatment of the disease and physical recovery. During the period of chemotherapy, traditional Chinese medicine mostly adopts the methods of strengthening the spleen and kidney, regulating qi and stomach, benefiting qi and nourishing blood, etc., which can significantly improve the above adverse reactions, reduce the pain brought by chemotherapy, improve the quality of survival during the period of chemotherapy, improve the hematopoiesis of bone marrow, and increase the completion rate of chemotherapy. Therefore, during the period of radiotherapy and chemotherapy, experienced doctors specialized in Chinese medicine and oncology can be asked to prescribe prescriptions for the patients, with the main purpose of nourishing the body, nourishing the liver and kidney, and alleviating the side effects of radiotherapy and chemotherapy, or according to the patient’s physical condition and the needs of the condition, adding anti-tumor herbs, which can reduce the toxicity and increase the effect. Most of the proprietary Chinese medicines used during radiotherapy and chemotherapy have the effect of benefiting qi, nourishing blood, and nourishing internal organs. Acupuncture and moxibustion can be used to improve bone marrow hematopoiesis and reduce digestive reactions by selecting acupoints such as foot Sanli, Neiguan, Zhongkou, Blood Sea, Sanyinjiao, and so on; auricular acupoints can also be used to regulate the function of gastrointestinal tract and sleep. External treatment with traditional Chinese medicine can be used to soak hands and feet in traditional Chinese medicine baths to reduce peripheral nerve damage caused by chemotherapy and reduce numbness. During the period of radiotherapy and chemotherapy, do not abuse health care products or take certain folk remedies and prescriptions without authorization, so as to avoid liver and kidney damage caused by improper use of medication, and should ask the doctor to treat according to the individual situation.