Complications after radiofrequency ablation vary from site to site and usually include subcutaneous hematoma, thromboembolism, pulmonary vein stenosis, and paralytic bowel obstruction. 1. Subcutaneous hematoma: Due to the need to use a large amount of anticoagulant during the operation, some patients have poor coagulation mechanism or hypertension, which can lead to postoperative bleeding and subcutaneous hematoma. 2. Thromboembolism: Cerebral embolism and pulmonary embolism are prone to occur after radiofrequency ablation. Some patients with mild symptoms may have transient cerebral ischemia, while severe patients may have irreversible neurological damage or even life-threatening. 3. Pulmonary vein stenosis: During the surgery, if the pulmonary vein radiofrequency ablation is out of range or excessive ablation and other factors will lead to pulmonary vein stenosis. And most of the pulmonary stenosis has no obvious symptoms. 4. Paralytic bowel obstruction: Intraoperative injury to the nerves innervating the gastrointestinal tract or embolism of the gastrointestinal artery can lead to paralytic bowel obstruction. In addition, it may also lead to arrhythmia, coronary artery injury and myocardial infarction, stroke and pericardial tamponade, etc. If there is any discomfort after the operation, it is necessary to consult the doctor and receive treatment according to the doctor’s instructions.