Abstract: ObjectiveTo reveal the change of vaginal microbe flora after vaginal delivery or cesarean delivery. MethodThree hundreds and seventy two women who labored in hospital were selected for the study, among them 220 women were given cesarean delivery and 152 underwent vaginal delivery. The vaginal secretions were collected for detection of PH value, BV, and bacterial culture. Besides, The time of lochia disappearance in puerperium was recorded. ResultsThere was no significant difference between the two groups in comparison of vaginal PH value and the time of lochia disappearance in puerperium (P>0.05). Compared with the subjects of cesarean delivery, the levels of E2, T, P and PRL in those whoc had vaginal delivery were statistically increased (P<0.05), while no significant difference was seen in LH and FSH (P>0.05). Compared with the women with abnormal vaginal PH value , the time of lochia disappearance in puerperium in the women with normal vaginal PH value was significantly decreased (P<0.05), and the positive rate of BV in women with normal vaginal PH value was also decreased (P<0.05). Conclusionthe vaginal microbe flora seems to be unbalanced following vaginal or cesarean delivery and vaginal PH value is abnormal. Additionally, Lactobacillus spp may be significantly depressed , with a high incidence of BV in both ways of delivery.

Key words: Puerperium, Vaginal, ecosystems, Leucorrhea, Lactobacillus