Left ventricular strong spots usually do not cause ventricular septal defect, left ventricular strong spots may be physiological strong spots, this situation left ventricular strong spots will gradually disappear after 28 weeks of pregnancy, but if the left ventricular strong spots gradually increase in size, then we need to carry out amniocentesis and other tests to rule out the fetal chromosomal anomalies. The left ventricular spot is usually the result of ultrasound of the fetus during pregnancy, which may be related to the thickening of the tendon cords or papillary muscles of the fetus’ heart, etc. In most cases, the left ventricular spot will disappear gradually with the development of the fetus. In most cases, the left ventricular spot will gradually disappear as the fetus develops. If the left ventricular spot does not disappear but gradually increases in size, then it is necessary to consider that there may be chromosomal abnormalities in the fetus, and amniocentesis or other tests are needed to analyze the chromosomal pattern of the fetus. LV puncta do not usually lead to ventricular septal defects, but LV puncta and ventricular septal defects can co-exist. If left ventricular bright spot is detected on examination, please follow the doctor’s instructions for follow-up examinations and interventions.