One month after surgery for benign lung tumors, it is usually necessary to review the chest CT, blood routine, C-reactive protein and other hematological tests, and thereafter it is usually necessary to review the above items every year. The treatment of benign lung tumors is mainly radical surgical resection, and after surgery, only regular review is needed to monitor the changes of the condition, and there is no need to do chemotherapy, radiotherapy and other anti-tumor treatments. Postoperative follow-up chest CT is mainly to understand the general recovery of lung tissues and organs after surgery, such as the presence of pleural effusion, intrapulmonary infections and so on. Benign lung tumors also need to do blood routine, C-reactive protein, liver function, renal function and other hematological indexes after surgery, and generally these indexes are also examined in order to assess the general recovery of the patient’s body after surgery, and to understand whether the patient has suffered from postoperative infections, bleeding and other complications.