The chest drain can be used for pneumothorax, hemothorax, pleural effusion, abscess chest, and post-open chest surgery, and its retention time needs to be determined according to the situation of gas or fluid drainage, and it is usually removed after 2-3 days of retention. The indications for removal of chest drain are that the daily drainage of chest drain is less than 200ml, the drainage fluid is relatively light, no gas escapes when coughing, chest X-ray shows good lung reopening, no obvious accumulation of pleural fluid and gas, no dyspnea or shortness of breath. However, if complications occur, the length of drainage tube retention varies, from a few days to several months. Meanwhile, the tightness and patency of the drainage tube need to be observed during its retention to prevent dislodgement, folding, bending, and pressure. In addition, after the patient’s chest drain is removed, attention should be paid to observe whether there are symptoms of chest tightness and dyspnea, air leakage from the incision, exudate, bleeding and subcutaneous hematoma.