Fetal strong left ventricular spot is mainly detected by fetal echocardiography. As the fetus increases in size and all organs develop completely, the strong left ventricular spot may disappear slowly. If the left ventricular spot does not disappear, but further increases in size, there may be signs of congenital heart dysplasia. You should pay attention to rest, avoid exposure to toxic and harmful substances, and eat more fresh vegetables and fruits, which are rich in vitamins and folic acid. If the fetus is found to have severe fetal heart dysplasia, the pregnancy should be terminated in time.