Premature rupture of membranes (PROM) refers to the rupture of the amniotic sac before the onset of labor, primarily affecting the fetus in the following ways. First, PROM can easily lead to premature birth, which may cause immature development of the fetus, often requiring treatment in neonatology. Second, PROM can lead to infections within the uterine cavity, subsequently causing newborn infections that can lead to neonatal death. Third, during the treatment of PROM, complications such as placental abruption or umbilical cord prolapse may occur, which can easily cause intrauterine hypoxia or death of the fetus. For PROM, it is essential to undergo proper treatment and monitoring. If any abnormalities arise, it is crucial to terminate the pregnancy promptly.