Separation of both renal pelvis in labor and delivery test indicates that the fetus has fluid in both kidneys. Some pregnant women in the usual process of maternity examination, ultrasound examination may appear to suggest that the fetus double renal separation, indicating that the fetus has fluid in both kidneys, this situation may be caused by the fetus to hold urine, but also may be caused by the fetus two kidneys congenital anomalies and other reasons. Generally speaking, if the separation of the collecting ducts of both kidneys does not exceed 1.0 centimeter, it is not a big problem. If the separation of the collecting ducts of both kidneys exceeds 1.0 centimeter or more, this may be caused by pathological reasons, and it is recommended to consult a specialist for advice. Pregnant women should pay attention to regular labor and delivery checkups during pregnancy, so that problems can be detected and dealt with at any time. If abdominal pain or abnormal vaginal bleeding occurs during pregnancy, it is important to seek medical attention as soon as possible.