Fetal ventricular septal defect is a fetal heart malformation. Fetal ventricular septal defect is a congenital heart malformation in which there is a defect between the left and right ventricles of the fetal heart. However, if the defect is small, it is likely to heal on its own as the fetus continues to develop. However, if the defect is large or the defect does not heal, elective surgery is required after the fetus is born. After the birth of a child with a ventricular septal defect, parents should take good care of the child, try to avoid catching colds, and eat more fresh vegetables and fruits to strengthen the body’s immunity. If the child with ventricular septal defect is found to have symptoms such as difficulty in breathing and rapid heartbeat, he or she needs to go to the hospital promptly.