There are no studies that show that the use of Bupleurum alone can cure lung cancer. It can be treated with this medicine after identification by a professional physician. It has the efficacy of clearing heat and removing toxins (removing heat and toxicity in the body), diuretic and eliminating swelling, activating blood circulation and relieving pain (relieving pain by removing blood stasis), etc. It is used as the main treatment for carbuncle, swelling and sores, sore throat, poisonous snake bites, and feverish drenching (burning stinging and pain during urination, accompanied by frequent urination and urgent urination, and discomfort in pulling of the small abdomen) and astringent pain. Adverse reactions are not clear, pregnant women should be cautious. According to traditional Chinese medicine, there are many types of identification for treating lung cancer, such as phlegm-dampness type, which is mainly manifested by coughing and sputum, sticky and thick sputum, white or yellowish-white in color, and weak and loose stools (thin and unshaped stools), etc., and can be treated by adding and subtracting Er Chen Tang. Qi and blood stagnation type, mainly manifested as cough, chest tightness, visible blood in sputum, dark red color of blood, etc., can choose Taohong Siwu Tang with additional subtractions. For qi and yin deficiency (deficiency of both qi and yin), the main manifestations are low phlegm, or sputum that is thin and sticky, cough, shortness of breath, weakness, fatigue (lack of spirit), spontaneous sweating (involuntary sweating during the day, aggravated by sweating with slight movement), night sweating (abnormal sweating after going to sleep, sweating stops after waking up), and dryness of the mouth, etc., which can be treated by the addition or subtraction of Sheng Vegetable and Vegetable Drink. Before using the above medicines, you should first clarify your own physical state, and it is recommended that you use them under the guidance of a doctor after identifying the symptoms in traditional Chinese medicine, and do not take them blindly on your own.