In infants with atrial septal defects, minimally invasive surgery usually results in discharge from the hospital in 7 days and return to normal activities. In case of open heart surgery, recovery may take about 1 to 2 months. Infantile atrial septal defect is a congenital heart disease, usually caused by atrial septal insufficiency combined with absorption dysfunction. If the infant’s atrial septal defect is relatively small, the choice of interventional sealing treatment, discharged after 7 days, can resume normal activities. If surgical treatment, such as open heart surgery, is chosen, recovery will be slower and may take about 1 to 2 months to recover. If an infant has atrial septal defect, it is recommended to go to the pediatric surgery department of a regular large hospital for consultation and examination, so that a professional doctor can conduct a professional evaluation and analysis to clarify the specific surgical treatment. Due to the different degree of atrial septal defect and surgical methods in infants, there are some differences in the recovery time after surgery, and no generalization can be made.