Fetal right renal dysplasia needs amniocentesis for further examination because right renal dysplasia may be caused by chromosomal abnormality, so amniocentesis should be done to clarify the chromosome number, morphology, etc., to determine the presence of chromosomal disorders. There are many factors causing fetal right renal dysplasia, such as congenital anomalies, genetic factors, etc. Right renal dysplasia not only affects the function of the kidneys, but also cannot rule out the possibility of combining with malformations of other parts of the body, so it is best to carry out amniocentesis to clarify the causes of right renal dysplasia, and then choose a reasonable treatment plan under the guidance of the doctor. It is recommended to have regular checkups after the discovery of right renal dysplasia to observe the development of both kidneys. Pregnant women should also keep a good mindset, cooperate with the doctor and take positive treatment.