Whether a pulmonary nodule of 2.4×1.1 cm needs surgery is mainly determined by its specific imaging performance. If a benign nodule is considered, it can be treated without surgery; if a malignant nodule is suspected, early surgery is needed. 1. Benign nodule: Although the nodule is large, if the imaging shows that the density of the nodule is uniform, the border is smooth and regular, or there is a high density of calcified shadows, it is considered to be a benign nodule with a high probability, so it can be treated without surgery, and can be followed up on a regular basis. 2. Malignant nodule: if the density of the nodule is uneven, the border is burr or jagged, then it is considered that the possibility of malignancy is higher, and it is recommended to give early surgical treatment, and then do pathological examination on the resected tissues to make a clear diagnosis. For malignant nodules, they need to be completely removed, and after the operation, it will be decided whether to give radiotherapy and other adjuvant treatment measures according to the situation. It is recommended to go to the hospital to improve the examination, in order to clarify the diagnosis and treatment.