The treatment of lung tumor 5cm depends on the benign and malignant nature of the tumor. Surgical resection is the mainstay of benign tumors, while surgery, radiotherapy, chemotherapy and targeted therapy are chosen for malignant tumors according to clinical staging. Benign tumors: including misshapen tumor, fibroma, chondroma, smooth muscle tumor, etc., usually found during physical examination, and the treatment is mainly based on surgical resection. Malignant tumors: i.e. bronchial lung cancer, according to different clinical stages, the treatment of early lung cancer is mainly surgical resection, while advanced lung cancer with metastasis, unable to be completely resected by surgery or pathological type of small-cell lung cancer can be treated with surgery combined with radiotherapy, chemotherapy or combination of radiotherapy and chemotherapy, and targeted therapy. Commonly used chemotherapy drugs include cisplatin, paclitaxel, etc. Radiotherapy includes localized treatment using gamma knife, radio-spectrum knife, etc. Targeted therapy is targeted treatment for genes specific to cancer cells, and common drugs include darafenib, erlotinib, etc. Once a 5cm lung tumor is found, it is necessary to go to the hospital in time, and the doctor will choose the appropriate treatment according to the examination, so as not to delay the condition.