Sudden redness in the middle of the night during 35 weeks of pregnancy is not normal, there may be signs of preterm labor, pregnant women can improve the symptoms through general treatment, medication and other ways. 1. General treatment: Pregnant women should pay attention to rest, avoid strenuous exercise or engage in heavy physical labor, at the same time, should be appropriate to record the amount and frequency of bleeding, so that the doctor can provide the doctor to facilitate the doctor’s judgment. Pregnant women should also pay attention to personal hygiene, timely replacement of contaminated underwear, to maintain local cleanliness. 2. Medication: Pregnant women who are accompanied by contractions should consult a doctor in time, and can use medication under the guidance of the doctor to protect the fetus, such as magnesium sulfate to inhibit contractions, but also can use drugs to promote the maturation of the fetal lungs, such as dexamethasone, etc., in order to alleviate the symptoms. For pregnant women who fail to keep the fetus alive, the pregnancy can be terminated according to the physical condition, choosing natural delivery or cesarean section to terminate the pregnancy. Besides, conditions such as placenta praevia and cervical lesions may also cause such conditions. Pregnant women are advised to seek prompt medical attention to clarify the cause of the condition and actively cooperate with the doctor’s treatment.