32 weeks is considered preterm. A preterm infant is defined as a person who has reached 28 weeks of gestation but is delivered at less than 37 weeks, so a 32-week delivery is considered preterm. Preterm labor with intact membranes is the most common and is mainly due to over-distension of the uterine cavity, maternal-fetal stress, and intrauterine infections. Premature labor with premature rupture of membranes is mainly due to malnutrition and cervical insufficiency. Therapeutic preterm labor can also be induced or delivered by cesarean section before reaching 37 weeks for maternal or fetal health reasons. The aura of preterm labor lacks specificity and is easy to miss, so it is necessary to predict preterm labor for pregnant women with high-risk factors. Regular pregnancy checkups, constant attention to the health of the fetus and the mother, and the guidance of a professional physician can minimize the occurrence of preterm labor.