There are contractions at 29 weeks that can keep the fetus full term, but the contractions may be different for different pregnant women and need to be analyzed on a case-by-case basis. Contractions often indicate the possibility of preterm labor, preterm labor can be divided into preterm labor with intact membranes, preterm labor with premature rupture of membranes, preterm labor of different natures, different treatment methods. Preterm labor with intact membranes can be seen in pregnant women’s exertion, twin pregnancies, etc. Adequate rest should be given, ritodrine can be given to inhibit contractions, magnesium sulfate to protect the fetal cerebral nerve, dexamethasone to promote the maturation of the fetal lungs and other treatments, such as contractions gradually weakened, the cervical canal does not continue to shorten, the majority of the pregnant women can continue the pregnancy; however, if the preterm labor can not be inhibited, the need to terminate the treatment of fetal preservation in a timely manner. Premature rupture of membranes can be seen in reproductive tract infection, abnormal fetal position. The drug treatment is the same as that for preterm labor with intact membranes, and the general treatment requires absolute bed rest to prevent prolapse of the umbilical cord, close attention to the pregnant woman’s body temperature, heart rate, amniotic fluid volume, amniotic fluid properties, fetal heart rate and regular rechecks of routine blood tests, and timely termination of pregnancy if chorioamnionitis or placental abruption is detected. If contraction occurs, pregnant women should consult the doctor and follow the doctor’s instructions to avoid opening of the uterus, rupture of fetal membranes or other situations that may endanger the mother and child.