There is a certain chance that the ventricular septal defects in babies will grow well and heal on their own. Clinical follow-up suggests that about 25%~33% of ventricular septal defects can be closed on their own, and the specific rate of self-healing in each baby is related to the age, the size and location of the ventricular septal defects, the combination of other malformations in the heart, and the clinical symptoms. 1. Age: Ventricular septal defects in babies within 1 year of age can continue to grow and develop, and more than 90% of the self-healing of ventricular septal defects occur within 1 year of age. 2. Size of ventricular septal defects: the self-healing rate of ventricular septal defects with a diameter of less than 2mm reaches more than 50%, but the rate of automatic closure of ventricular septal defects with a diameter of more than 5mm only reaches 5%~10%. 3. Location of the ventricular septal defect: the self-healing rate of myocardial ventricular septal defect is 37.9%~93% within 1 week of age, the rate of membranous and perimembranous ventricular septal defect is 4.7%~35%, and the rate of subcranial and intracranial ventricular septal defects is almost impossible to be closed automatically. 4. Combined with other intracardiac malformations: e.g., tetralogy of Fallot, transposition of the great arteries, etc., it is almost impossible for the ventricular septal defects to close automatically. 5. Large ventricular septal defects with heart failure have a self-healing rate of about 7%. Whether or not your baby’s ventricular septal defect can grow back, it is recommended that you go to the hospital for further counseling and diagnosis.