Fetus detected with polycystic kidney should be evaluated by professional doctors and then need to terminate the pregnancy. Polycystic kidney is an autosomal inherited disease, and its father or mother will have polycystic kidney patients in their family. Polycystic kidney fetuses have their kidneys gradually replaced by cysts from birth and eventually develop into kidney failure. When the fetus is found to be polycystic kidney, it is mostly recommended clinically to terminate the pregnancy to avoid having a child with polycystic kidney. Most of the fetal polycystic kidney is autosomal recessive polycystic kidney disease, which is a genetic disease caused by genetic mutation, the current treatment is mainly symptomatic treatment, there is no effective intervention, the focus of treatment for patients with neonatal onset is to correct the respiratory failure of the child.