There is no authoritative information on the sequelae of foramen ovale occlusion, and it is generally safe, with a small number of patients experiencing complications such as bag effusion or tamponade, and embolization of the occluder. Foramen ovale occlusion is mainly used for the treatment of unclosed foramen ovale, at present, there is no relevant authoritative information to specify what are the sequelae of foramen ovale occlusion, is not clear. Foramen ovale occlusion is safe and complications are relatively rare. However, according to other data, complications such as pericardial effusion or tamponade, embolization or displacement of the blocker may occur in a small number of patients undergoing foramen ovale blockade. Second, the occurrence of postoperative sequelae is related to the patient’s physical condition and postoperative recovery. Ovoid foramen magnum is a common congenital cardiac anomaly in clinical practice, and the prognosis is generally good with timely and standardized treatment. In conclusion, after surgery, patients with patent foramen ovale need to strengthen their daily life management and go to the hospital for regular follow-up, so that the doctor can understand the postoperative recovery.