If a 4D ultrasound says that the fetus has a strong light spot in the left ventricle, three aspects need to be considered, namely, normal performance, abnormal cardiac performance, and abnormal chromosomal performance. However, 4D ultrasound alone cannot fully confirm the diagnosis, therefore, fetal heart ultrasound, non-invasive DNA test or amniotic fluid puncture test as well as the specific situation of the pregnant woman are needed for further judgment.1. Normal performance: If the above-mentioned examination items are performed in a regular hospital and the examination results suggest that no abnormality is found, it may be due to fetal intraventricular tendon thickening or central papillae during the development process Mineral deposition and other factors, generally will not affect the function of the heart, with the increase of pregnancy month, usually the strong light point of the left ventricle will disappear on its own, no special treatment is needed; 2, abnormal cardiac performance: if the fetal heart ultrasound examination is carried out, suggesting abnormal conditions, found that the fetal cardiovascular development malformation, then the strong light point of the fetal left ventricle may be the performance of cardiac abnormalities; 3, abnormal chromosomal performance: do The 4D ultrasound said that the strong light point of fetal left ventricle may also indicate fetal chromosomal abnormality, which needs to be combined with non-invasive DNA test and amniotic fluid puncture test as prescribed by the doctor, and then combined with the age of the pregnant woman and whether she has ever given birth to a child with chromosomal abnormality, etc. to make a comprehensive judgment. In general, the strong light point of the left ventricle of the fetus according to 4D ultrasound is usually normal, so parents need not be too nervous and anxious, and can consult a professional doctor to decide the next step.