How long can lung cancer patients live after hemoptysis cannot be generalized, some patients have a longer survival time, and the 5-year survival rate can reach about 50% after active treatment. Lung cancer is one of the more common malignant tumors in clinical practice. The specific cause of lung cancer is still unclear, but it is considered to be related to long-term smoking, long-term inhalation of polluted gases, genetic factors and so on. Common clinical symptoms of lung cancer patients include cough, hemoptysis, wheezing, chest pain, etc. Among them, hemoptysis symptoms can occur in the early stage or in the late stage of the disease, so how long lung cancer patients can live after hemoptysis can not be generalized, and it needs to be judged in combination with the degree of hemoptysis of patients. Hemoptysis in early stage lung cancer patients usually only shows blood in sputum when coughing up sputum, or the amount of blood in hemoptysis is small, and hemoptysis symptoms do not appear frequently. At this time, if the patient actively consults the doctor and undergoes surgical treatments such as segmental lung resection and lobectomy, the prognosis is usually good and the survival time is long, and the 5-year survival rate can reach about 50%. However, patients with frequent hemoptysis and heavy bleeding, which is generally known as hemoptysis in clinical practice, usually indicate that the patient’s condition has already developed to the advanced stage, and the patient’s survival time after treatment is shorter, and the 3-year survival rate may be less than 20%. Although it is uncertain how long lung cancer patients can live after hemoptysis and the survival rate of advanced lung cancer is low, it is still recommended that patients should actively seek medical treatment to prolong the survival cycle and improve the quality of life as much as possible. Avoid delaying the treatment time, which will lead to more difficult treatment in the later stage.