Uterine adhesion bands are a form of uterine adhesions. The appearance of uterine adhesion band in late pregnancy may be related to previous intrauterine operation, infection, heredity and other factors. 1. Previous intrauterine operation: for example, abortion, purging treatment, etc., which may easily lead to endometrial damage and the occurrence of uterine cavity adhesion band. 2. Infections: endometritis, post-discharge infection and other infections in the uterine cavity may also lead to the emergence of uterine adhesion bands. 3. Heredity: Hereditary factors can also cause uterine adhesion bands. If the scope of the uterine cavity adhesion band is relatively small, it usually will not affect the development of the fetus. If they are large, they may lead to intrauterine oxygen deprivation of the fetus. Pregnant women who develop uterine adhesion bands in late pregnancy need to consult a doctor in time in order to identify the specific cause of the disease and carry out targeted treatment under the guidance of the doctor.