Microinvasive lung cancer usually does not require lymph node dissection. Radiotherapy is also not needed after surgery, which can be said to achieve the purpose of eradication. Symptoms of early lung cancer mainly manifest as cough, hemoptysis, dyspnea, fatigue, lethargy, nausea, etc. Generally, CT examination can find lung mass less than 3cm, and after puncture biopsy to make it clear, surgery will be actively adopted for treatment. Micro-invasive lung cancer, when doing physical examination of chest CT examination, manifested as grinding glass-like change of 1cm in size, or mixed nodule of about 1cm in diameter, located at the lung margin of 2cm, can be cured by surgery. Those close to the hilar need lobectomy; those located at the lung margin can undergo thoracoscopic pulmonary wedge resection. Lymph node dissection is usually not required. Once diagnosed, patients with microinvasive lung cancer are recommended to go to regular hospitals for standardized treatment to avoid delay.