Ventricular septal defects generally do not recur after surgery, but postoperative cardiac ultrasound should be periodically reviewed to check for residual leakage, which should be treated promptly. Surgical treatment of ventricular septal defects mainly includes two means, ventricular septal defect occlusion as well as ventricular septal defect repair, which can improve the quality of life and enable long-term survival, and achieve the possibility of clinical cure without recurrence. However, it should be noted that if the residual part of the defect is not completely closed during the surgery, or the defect site is not repaired well and then subjected to blood flow impact after the surgery, or the occluder is dislocated, residual leakage may occur after the surgery, when the defect is usually smaller than before the surgery. Regular postoperative follow-up is recommended to evaluate the defect repair under the advice of the surgeon. To reduce the risk of residual leakage due to displacement or blood flow impingement, it is recommended to avoid strenuous exercise during recovery. It is important to keep reviewing the postoperative period and seek medical attention if there is any discomfort.