Primary bronchial lung cancer (lung cancer), is one of the most common tumors. Among the clearer causative factors, smoking is the first, followed by atmospheric pollution and physical and chemical carcinogenic factors. The most common symptom of early lung cancer is irritating dry cough, which is aggravated with the increase of tumor, often accompanied by coughing sputum, blood in sputum, chest tightness, chest pain, shortness of breath, fever, and wasting. Precautions for lung cancer patients: 1. Strengthen nutrition, eat high-calorie, high-protein and high-vitamin diet, and eat more fresh vegetables and fruits. 2. Avoid going to crowded markets and public places, pay attention to keeping warm and avoid getting cold and flu. Reasonable arrangement of rest and activities, avoid fatigue, appropriate participation in social activities and work. 3.Keep a good mood, pay attention to mental health care, and build up confidence to overcome the disease. 4.Adhere to the doctor’s requirements to complete the Chinese medicine treatment and radiotherapy. Closely observe and deal with various reactions during treatment, pay attention to protect the dry skin of the irradiated area, avoid friction, hot compresses, physical therapy, application of irritating drugs and soap and water scrubbing. 5. Review once a month within six months after discharge, once every three months after six months, and once a year after the second year for the rest of your life. If abnormal discomfort such as cough, chest pain, shortness of breath, loss of appetite, weakness and progressive wasting occurs, you should come to the hospital for review at any time. 6. Prohibit smoking and alcohol, spicy and stimulating food, greasy and fried food. 7. During radiotherapy, lung cancer patients should eat more sweet and cool foods that can nourish Yin and moisten dryness and foods that can clear heat and detoxify toxins. Such as: raw pear juice, fresh lotus root juice, rutabaga soup, watermelon, honey, mung bean soup, lily and various vegetables and fresh fruits, avoid eating foods that help to produce phlegm and spicy foods, such as ginger, leek, onion, yam, fatty meat, chili and pepper.