Whether there is a correlation between hydrocephalus in the first pregnancy and the second fetal arrest needs to be analyzed specifically. If the hydrocephalus and fetal arrest are caused by congenital factors, there may be a correlation. There are many causes of hydrocephalus, including congenital malformations, infections, hemorrhages and tumors. If the hydrocephalus is caused by congenital malformation, that is, genetic factors, there is no way to correct it, which may lead to the woman’s second pregnancy to still have fetal hydrocephalus, causing fetal arrest. If the hydrocephalus is caused by acquired factors, as long as the predisposing factors are actively corrected, it is generally possible to avoid the recurrence of hydrocephalus in the second pregnancy, and a good maternity checkup during pregnancy can also detect fetal abnormalities and deal with them in a timely manner. Therefore, it is recommended that women prepare for pregnancy, must actively participate in prenatal examination, found that the problem needs to be corrected first, to avoid causing fetal health damage.