Lung cancer patients with symptoms of coughing up bloody sputum can not rely on conditioning alone, but can treat the primary disease through surgery and other treatments; they can also use drugs such as thrombin to stop bleeding as prescribed by doctors. Lung cancer is a common malignant tumor of respiratory system, which can be caused by smoking, heredity, environment and other factors. Early stage of lung cancer patients may have the symptom of blood sputum, which is mostly seen in patients with central lung cancer. At this time, the primary tumor should be treated promptly by surgery, radiotherapy, targeted therapy and other methods. Symptomatic treatment with hemostatic drugs, such as thrombin, can also be taken. With the development of the disease, if the amount of bleeding becomes bigger, it can be treated by negative pressure suction, interventional embolization and other methods in order to achieve the effect of stopping bleeding quickly. When the patient’s disease is diagnosed, he should also cooperate with the doctor in time to avoid delaying the disease.