Blood in sputum 2 months after lung cancer surgery is not normal, so it is recommended to consult hospital as soon as possible and do relevant examination to clarify the cause. Blood in sputum can appear at the early stage after lung cancer surgery, which is mostly due to the damage of mucous membrane of lungs caused by surgical operation. The amount of blood in sputum is relatively small, and usually does not need special treatment, and it can be restored to normal soon by relying on the patient’s own repairing function. However, if there is blood in sputum again 2 months after lung cancer surgery, it cannot be excluded that there is lung infection or lung cancer progression. Therefore, it is recommended to go to the hospital as soon as possible to have chest CT, blood routine, C-reactive protein and other tests to clarify the cause, and then give antibiotics such as amoxicillin and other anti-inflammatory, aminocaproic acid and other drugs to stop bleeding as well as anti-tumor treatments in a timely manner.