Early to mid-stage lung cancer is potentially curable with comprehensive treatment. Generally speaking, lung cancer is divided into adenocarcinoma and squamous lung cancer according to the pathological type, and there are few other types of adenosquamous cancer. Early to mid-stage lung cancer includes adenocarcinoma and squamous carcinoma. Generally speaking, surgery is the main treatment, and post-surgery can be combined with radiotherapy and chemotherapy. Another part can be treated with targeted drugs, such as lung adenocarcinoma, if there is a mutation in the genetic test. This is more precise and has less side effects, which can significantly prolong the survival period. If lung cancer has not recurred for more than 5 years after comprehensive treatment, it can be clinically cured, but it still needs to be reviewed regularly, usually once a year after 5 years. In early and middle stage of lung cancer, within 2 years after surgery, it is recommended to review once every 3 months; for 2-5 years, review once every half year, and look at it while treatment.