Whether a 10-year-old child found atrial septal defect needs treatment or not is decided according to the symptoms and ultrasound examination. If treatment is needed after evaluation, it is usually treated by interventional blockage and open-heart surgery, etc.; small defects without hemodynamic changes do not need treatment. 1. Interventional treatment: If there are hemodynamic changes in the ultrasound examination and the atrial septal defect is secondary to a foramen ovale, transvascular puncture interventional occlusion treatment is generally preferred. 2. Open-heart surgery: ultrasound examination for primary foramen ovale type atrial septal defect, venous sinus type, apexless coronary sinus type need open-heart surgery. 3. No treatment: 10-year-old children found atrial septal defect, the defect is relatively small, at the same time, if no symptoms, ultrasound examination of the pulmonary circulation and the blood flow ratio of the body circulation is less than 1.5 times, there is no hemodynamic changes, generally do not need special treatment, strengthen the nutrition, appropriate exercise, regular review and follow-up. 10-year-old atrial septal defect, please consult the hospital in a timely manner, by the doctor according to the symptoms and ultrasound and other tests to assess the decision, do not make decisions without authorization, to prevent adverse consequences.