What are the causes of uterine adhesions? Any factors that cause endometrial destruction can cause uterine cavity adhesions, most commonly after abortion, so what are the reasons for the occurrence of uterine cavity adhesions? A history of uterine operations a. Pregnancy factors: pregnancy-related uterine surgery such as early pregnancy negative pressure aspiration, middle pregnancy forceps scraping, middle pregnancy induction scraping, postpartum bleeding scraping and spontaneous abortion scraping. This may be due to the fact that the endometrial basal layer of the pregnant uterus is more easily damaged and the uterine walls adhere to each other, resulting in permanent adhesions. b. Non-pregnancy factors: uterine fibroid enucleation (into the uterine cavity), submucosal fibroid removal via the uterine cavity, longitudinal hysterectomy, and double hysterectomy destroy the basal layer of the endometrium, exposing the myometrium to the uterine cavity and leading to anterior and posterior adhesions of the uterine wall. Second, surgical inflammatory factors intrauterine infection uterine tuberculosis, postmenopausal senile endometritis, secondary infection after uterine operation, puerperal infection, secondary infection caused by the placement of intrauterine device after surgery, etc.