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 anomaly is much less common than that due to bony birth canal anomaly, so it is easy to be overlooked and cause missed diagnosis. Soft birth canal anomalies are those in which the uterine orifice, vagina and vulva are tough and not sufficiently extended, making it difficult for the fetus to pass. Soft birth canal abnormalities are mostly due to advanced maternal age and abnormal physical development, so women of childbearing age should seize the best age for childbirth and do preconception checkups during the preparation for pregnancy. Soft birth canal abnormalities can also cause obstructed labor, so a vaginal examination in early pregnancy to understand the condition of vulva, vagina and cervix, as well as the presence of other pelvic abnormalities, has some clinical significance. Patients with soft birth canal abnormalities are advised to eat liquid food, food rich in high quality protein, and food rich in vitamins. The following foods are recommended to be eaten in moderation: 1. Porridge Porridge is a carbohydrate, which is easily absorbed by the intestinal mucosa and promotes the absorption of nutrients, which is beneficial to the patient’s recovery. 800-1000 ml per day is appropriate. Milk is rich in high quality protein nutrients, providing nutrients for patients and facilitating their recovery. 300-500 ml per day is appropriate, and hot drinks are preferred. 3, lemon Lemon is rich in vitamins, has a clear heat detoxification, antibacterial and anti-inflammatory effect, is conducive to the recovery of the patient’s body. Drink 300-500 ml of water every day is appropriate.