Fetal left renal parenchymal echogenicity alone is partly a transient change in fetal renal echogenicity and does not indicate organic pathology or renal dysfunction. However, it is relatively a soft ultrasound indicator, and the chances of other malformations and chromosomal abnormalities in the fetus will be higher with parenchymal echogenicity enhancement. Therefore, if there is an increase in the echogenicity of the left renal parenchyma, it is necessary to check whether there is an abnormal amount of amniotic fluid and whether there is any combination of cardiac malformation, urinary tract malformation, skeletal malformation, etc. It is necessary to do regular review in the future. It is necessary to do regular checkups in the future, and to consider amniocentesis if there are repeated abnormalities of such soft indicators or if the pregnancy belongs to a high-risk group. Don’t be overly nervous about the increased echogenicity of the left renal parenchyma of the fetus. If not combined with other abnormalities, the chances of the fetus having problems are relatively small, you need to follow the doctor’s instructions to do a good job of review.