Foramen ovale nonocclusion of the heart usually has no obvious symptoms if the condition is mild, but if the condition is more severe, symptoms such as migraine, stroke and fainting may occur. Ovoid foramen ovale is the failure of the foramen ovale to fuse. The foramen ovale is a physiologic passageway that exists in the atrial septum of the heart during the embryonic period, and it usually fuses at 5 to 7 months after birth, but if it does not fuse by age greater than 3 years, then it is called oval foramen ovale. If the condition of patent foramen ovale is mild, there is no shunt or the shunt is small, usually there is no obvious clinical manifestation, and it is difficult to hear a murmur on auscultation. If the condition is severe, i.e., when a significant shunt occurs, the patient may experience migraine, unexplained stroke, and may be accompanied by syncope, sleep apnea, temporary aphasia, lying dyspnea, and other uncomfortable symptoms. Ovarian foramen undulare should seek medical attention in time and follow the doctor’s instructions for appropriate treatment, so as not to continue the development of the condition and jeopardize the patient’s health.