常见的导致流产的子宫生殖器病变有发育畸形，异生病变及损伤性病变：子宫畸形，如子宫发育不良、双子宫、双角子宫、单角子宫、纵隔子宫等;子宫肌瘤，如粘膜下肌瘤及某些肌壁间肌瘤;子宫腺肌病、宫腔粘连;宫颈重度裂伤、宫颈部分或全部切除术后、宫颈内口松弛等所致的宫颈机能不全，可导致胎膜早破而发生晚期流产。

　　Common causes of abortion uterine genital lesions have developmental abnormalities, abnormal changes and lesions: uterine abnormalities, such as uterine dysplasia, double uterus, double horn uterus, single horn uterus, mediastinal uterus; Uterine fibroids, such as submucosal fibroids and some intramural fibroids; Adenomyosis and intrauterine adhesions; Severe cervical laceration, cervical partial or total excision, cervical cavity relaxation caused by cervical insufficiency, can lead to premature rupture of membranes and late abortion.