Sequelae of artificial lung ecmo mainly include bleeding, thrombus, infection, and local complications of blood vessels. Artificial lung ecmo is a kind of medical instrument for first aid, the principle is to lead the carbon dioxide-rich venous blood out of the body, and then the carbon dioxide and oxygen are exchanged outside the body, and finally the blood carries the oxygen back to the patient’s body, and the main role is to replace the lungs work. 1. Bleeding: ecomo needs to draw blood out of the body for circulation, and anticoagulation is needed in the process of circulation to avoid the formation of thrombus, which may cause uncontrollable bleeding when abnormal coagulation occurs. 2. Formation of thrombus: Because of the need to pass through the extracorporeal circulation system, coagulation is likely to occur, the formation of clots, the patient may develop thrombus, such as the occurrence of pulmonary embolism, cerebral infarction and so on. 3. Infection: ecomo belongs to a kind of invasive operation treatment, and need to carry on the extracorporeal circulation for a long time, which increases the chance of exposure, and easy to cause bloodstream infection. 4. Local damage to blood vessels: the operation requires vascular puncture, leaving thicker catheters, which may lead to local vascular damage, or the formation of local hematoma or ecchymosis, as well as local skin scarring. Patients are advised to consult their physician for advice on the specific use of the catheter.