First of all, lung cancer itself is a serious disease, if there is no invasion or metastasis to the main bronchial tubes and surrounding tissues, it is a relatively mild condition; if there is invasion, destruction or metastasis to the main bronchial tubes and surrounding tissues, it is a very serious condition. 1.1~2cm lung cancer is the earliest tumor if it is only confined to the internal lung tissues and has no invasion and metastasis to the main bronchial tubes, mediastinum and pleura, which is a relatively mild condition, and it can be radically resected through surgery, and most of them can be clinically cured. 2. If the tumor has caused obvious invasion to the surrounding tissues or metastasis, it belongs to the middle to late stage, and the cure rate will be significantly reduced, which is a relatively serious situation. If 1~2 cm lung cancer is found, accompanied by obvious symptoms such as chest pain and coughing up blood, it is necessary to be admitted to the hospital for examination in time, and after checking the specific condition, standardized treatment should be carried out under the guidance of clinicians.