Lung tumor 8cmx7cm is not serious if it is benign; if it is malignant, the situation is relatively serious. Lung tumors are divided into benign and malignant, and the severity cannot be determined by the size of the tumor alone, but also by the nature and stage. If it is a benign lung tumor, although the volume of 8cmx7cm is relatively large, but there will be no metastasis, invasion, through surgical resection can be recovered, and it is not easy to recur after surgery. If the tumor is malignant, the situation is more serious, the size of 8cmx7cm belongs to T3, there may be lymph node metastasis or distal organ metastasis, and timely treatment must be carried out, otherwise the condition will rapidly aggravate and cause death.