A 16 mm ground glass nodule in the left lung has reached surgical indications and is amenable to surgical treatment. Surgery is usually recommended for pulmonary ground-glass nodules greater than or equal to 8 mm. The most common surgical procedure is thoracoscopic lobectomy or segmental resection. Thoracoscopic lobectomy or segmental resection begins with the establishment of a surgical channel, reflecting the situation in the thoracic cavity on a monitor through an endoscope, and is performed microscopically with special surgical instruments. Lobectomy or segmental resection is selected according to the specific conditions of the lesion, such as size, extent of involvement, and depth of infiltration. After resection of the lesion, pathological return is awaited, and if the pathological return is malignant, further individualized treatment is required. Pulmonary ground-glass nodules are relatively common in the clinic, and once they occur, they should go to the hospital in time and be diagnosed and treated under the guidance of specialized doctors.