The common causes of redness at 32 weeks of pregnancy without stomach pain are premature rupture of fetal membranes, low placenta, cervical-related diseases, etc. Patients need to go to the obstetrics and gynecology department to perform abdominal ultrasound, vaginal fluid smear and other related examinations to clarify the cause. 1. premature rupture of fetal membranes: when pregnant women see redness, they should also pay attention to whether there is vaginal fluid, if there is more vaginal fluid, it is diagnosed as premature rupture of fetal membranes, some pregnant women do not have symptoms of stomach pain and will deliver in the near future Some pregnant women have no stomach pain and will deliver in the near future. If there is no premature rupture of membranes, the possibility of successful fetal preservation will be higher; 2. low placenta: it is recommended to do fetal 3D ultrasound and pay attention to the position of the placenta. Under normal circumstances, the lower edge of the placenta should be more than 7cm away from the inner cervical opening. If the lower edge of the placenta is less than 7cm from the inner cervical opening, consider the placenta to be hypoplastic. When the placenta is low, there may be a small amount of vaginal bleeding, but some patients will not experience stomach pain and hospitalization is recommended for fetal preservation treatment. This is because a child born at 32 weeks is premature and each organ is immature. 3. Cervical-related diseases: cervical fibroids, precancerous cervical lesions, cervical polyps and other diseases may cause vaginal bleeding. If in the mild symptomatic stage, the patient often does not experience pain. At this time, an internal examination is needed to note whether the surface of the cervix is smooth. At 32 weeks it is important to monitor contractions and also do a fetal heart monitoring test. If more regular contractions have occurred, magnesium sulfate should be used to suppress contractions, while the pregnant woman should be placed on her left side and given proper rest.