There are many things that need to be taken care of before surgery for children with an unclosed arterial duct. These include prevention of colds and flu, prevention of bed falls and burns, attention to nutrition, prevention of infection, and attention to temperature changes. We hope that parents will pay attention to the fact that good preoperative care is crucial for the next treatment. The main precautions to take before surgery for unclosed arteries are as follows: 1. Prevent the child from getting a fever or cold before surgery for unclosed arteries to avoid affecting the surgery. Do not have many relatives visiting and keep the room air fresh. 2. Pay attention to safety to prevent bed falls, burns and other accidents that may affect the surgery, and do a good job of psychological care for children with unclosed ductus arteriosus to eliminate their fear of surgery and ensure adequate sleep the night before surgery. 3, pay attention to nutrition with the supply of sufficient energy, protein and vitamins to ensure nutritional needs and enhance physical fitness to improve tolerance to surgery. Be patient with children who have difficulty feeding, and have small amounts of multiple meals to avoid choking and breathing difficulties, and have parents accompany them when necessary. Older children can be encouraged to eat in groups to improve appetite. In case of cardiac insufficiency with water and sodium retention, a salt-free diet or low-salt diet should be adopted according to the condition. 4.Establish a reasonable living system to arrange the work and rest time of the child, reduce the burden on the heart, and ensure sleep and rest. Arrange the appropriate amount of activity according to the condition. Concentrate on nursing care, avoid emotional excitement and loud crying. Severely ill children should rest in bed. 5. Prepare the child’s skin (bath) on the second day after admission and the day before surgery, especially the site of possible venous puncture in congenital heart surgery, the site of surgical incision and the cleanliness of the auricle and periumbilical area. Cut the overly long fingernails of hands and feet. Family members prepare items to be brought into the ICU the day before surgery and deliver them to the nurses’ desk. Also prepare diapers and other related items. 6. To prevent vomiting during the operation for patent ductus arteriosus that may cause misaspiration or even asphyxia, fasting and water fasting are required before the operation. Morning surgery patients should start fasting at 10PmC2Am the night before surgery, and afternoon surgery patients should fast after 6Am on the day of surgery. 7. Prevent infection, pay attention to temperature changes, add or remove clothes according to temperature changes in time to avoid respiratory infections caused by cold. Pay attention to protective isolation to avoid cross-infection. When doing minor surgery (such as tooth extraction), antibiotics should be given to prevent infection and prevent infectious Endocarditis occurs. Once infection occurs, it should be treated actively.