The soft birth canal includes the lower uterine segment, cervix, vagina and vulva. Lesions in the soft birth canal itself can cause obstructed labor, and lesions in and around other parts of the genital tract can also affect the soft birth canal and make labor difficult, but the former is more common. The obstructed labor due to soft birth canal abnormalities is much less common than that due to bony birth canal abnormalities, so it is easy to be overlooked, resulting in missed diagnosis. Therefore, vaginal examination should be performed routinely in early pregnancy to find out whether there are any abnormalities in the genital tract and pelvis. Soft birth canal abnormalities can also cause obstructed labor, so it is of clinical significance to perform a vaginal examination in early pregnancy to understand the condition of vulva, vagina and cervix, as well as any other abnormalities in the pelvis. If the cervical opening is stagnant at 5-6 cm and does not continue to open up, a cesarean section should be performed. If the cervical opening is nearly full and the extent of edema is not large, the fetal head can be pushed up during vaginal examination to adjust the position of the fetal head and release the pressure between the fetal head and the pubic bone, and the edematous part of the cervix can be gently pushed up with the fingers to make it subside, and sometimes vaginal delivery can be performed. You can also try to inject atropine 0.5mg or scopolamine 0.3mg into the edema site, or try to close the cervical tissue, that is, 0.25% procaine injection, 5ml on each side, after 1 to 2 hours of observation, still no relief, the opening of the uterus can not continue to dilate should be performed cesarean section. 2, if the cervical scar prevents the opening of the uterus to continue to expand, should not wait for a long time, it is appropriate to perform a cesarean section to prevent laceration. If the cervical scar prevents the opening of the uterus from expanding, cesarean section should be performed to prevent laceration. 3.If cervical cancer is found during pregnancy, cesarean section should be performed to terminate the pregnancy, and if it is in late pregnancy or near delivery, cesarean section should be performed and radiation therapy should be given afterwards. If the scope of the lesion allows, radical surgery is also feasible. 4.If the fibroids are in the lower part of the uterus and block part of the pelvic cavity, they should be delivered by cesarean section. If it does not affect the birth canal, postpartum hemorrhage must be prevented. If the uterine tumor is in the lower part of the uterus and it is blocking part of the pelvic cavity, it is necessary to perform a cesarean section. 5.If ovarian tumor is in the early stage of pregnancy, it should be closely observed and surgically removed at 14 to 18 weeks of pregnancy. If ovarian tumor occupies part of the small pelvic cavity and obstructs the birth canal, cesarean section and surgical removal of the tumor is feasible. When the ovarian tumor is removed, a rapid pathological examination should be done to determine the nature of the tumor, and if it is malignant, it should be further treated according to the condition. 6. Simple vaginal lateral wall cysts can be punctured and aspirated for appropriate treatment after delivery. Vaginal tumors are rare and can be treated appropriately according to the specific location and size, in order not to affect the birth canal. If the birth canal is obstructed, a cesarean section should be performed. 7. In case of pregnancy with a stumped uterus, a cesarean section should be performed and the stumped uterus should be removed. In cases of pregnancy with a bicornuate uterus after Strassmann’s operation, delivery should be closely monitored to prevent rupture of the paralytic scar, and the indications for cesarean delivery should be relaxed. Such cases have placental adhesions, and bleeding should be prevented after delivery. 8.Severe perineal edema can be released by multi-point puncture under aseptic conditions and prevent infection after delivery. The rupture of perineal vein tumor should be prevented, once ruptured, compression and suturing should be done to stop bleeding, and appropriate disposal should be made after delivery. If the perineum is tough, an episiotomy should be performed at an appropriate time to reduce perineal laceration.