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 should eat liquid food; food rich in high quality protein; food rich in vitamins. Avoid eating foods that are easy to produce gas; such as taro, soybeans, sweet potatoes; avoid eating foods that are not easy to digest; such as rice cakes, rice dumplings, rice biscuits; avoid eating spicy and stimulating foods; such as chili peppers, pepper, ginger. The following foods are recommended to eat less or not: 1, sweet potatoes Sweet potatoes are relatively easy to produce gas food, which can easily lead to slow intestinal peristalsis, abdominal distension, affecting the absorption of nutrients, which is not conducive to the recovery of patients. It is advisable to eat easily digestible non-gas-producing food. 2.Rice is a difficult food to digest, which can lead to slow intestinal peristalsis and abdominal distension, which is not conducive to the recovery of the patient’s body. It is advisable to eat easily digestible food. 3, ginger Ginger is a stimulating food, easily stimulated to cause intestinal mucosa congestion, swelling, affect the absorption of nutrients, is not conducive to the recovery of patients. It is advisable to eat easily digestible and light food.