Primary lung cancer is easier to be cured than metastatic lung cancer. Primary lung cancer is malignant tumor originated from bronchial tubes, glands and mucous membranes, which is mostly solitary and may be early or middle-late; while metastatic tumor is caused by tumors from other parts of the body transferring to the lungs through the bloodstream, which is often multiple and is mostly seen in patients with advanced cancer, and most of the patients can only prolong their survival cycle through comprehensive and conservative treatment. Most of the patients can only prolong their survival cycle through comprehensive and conservative treatment. Primary lung cancer has more treatment options, and the cure rate is also higher. If early-stage patients undergo radical surgery in time, the postoperative cure rate can reach more than 95%; intermediate and late-stage patients can determine the treatment plan according to the situation of metastasis, which is more or less the same as that of metastatic lung cancer in general.