After Iodine 125 particle implantation treatment for lung cancer patients can usually still have surgical resection. Iodine 125 particle implantation therapy is a kind of localized radioactive particle therapy for lung cancer treatment, which belongs to a kind of internal radiation therapy and is suitable for some lung cancer patients who have contraindications to surgery at early stage and cannot undergo ablation therapy, or single small lung metastasis, or some patients who have localized cancer remnants after surgery for lung cancer. The effect of iodine 125 particle therapy on lung cancer patients is relatively small, so if the tumor shrinkage is not significant after treatment, the treatment of surgical resection of lung tumor can be taken again, or for some patients whose tumor shrinkage can be resected by radical surgery after treatment, radical surgery can be given again.