The foramen ovale is the fissure in the middle of the septum. During fetal life, the foramen ovale is open in order to maintain blood circulation throughout the body, and after birth the foramen ovale can close naturally in most people. If the foramen ovale does not close naturally by the age of three years or older, it is called foramen ovale. Foramen ovale insufficiency is one of the most common congenital heart diseases in adults, about 25% of the normal population. It can cause strokes and occurs in patients at a relatively young age, with approximately 50% having transesophageal echocardiography and finding an unclosed foramen ovale. Another part of the population is prone to migraine. Migraine patients account for about 30%-40% of the incidence of unclosed foramen ovale, and up to 48%-70% of those with migraine with aura, which is higher than the incidence in the normal population. Migraine symptoms can be partially relieved after closure. Catheter occlusion is an interventional procedure that is relatively safe and reliable and can reduce the recurrence rate of stroke and transient cerebral ischemia and relieve migraine symptoms.