The optimal age for surgery for children with mild symptoms of arterial ductus arteriosus is 2 to 6 years old, while those with severe symptoms should be operated on early. Arterial ductus arteriosus is a congenital disease. Some children may experience automatic closure as they grow before the age of one, while those who do not need surgery. For children with mild or even no symptoms, surgery can be performed after the age of two, when the blood vessels and other tissues are more pliable, making surgery easier and less risky. For patients with more severe symptoms, such as moderate or even severe arterial hypertension, heart failure, enlarged liver, etc., surgery is needed as soon as possible to avoid aggravation of the condition, which could jeopardize the child’s life. Children with arterial ductus arteriosus should be well taken care of after the surgery, and seek medical treatment in time if any discomfort occurs.