Objective:to explore the significance of diagnosis and therapy of abnormal menstruation after artificial abortions by Hysteroscopy. Methods:to retrospectively analyze the clinical data of 205 cases with abnormal menstruation after artificial abortion which were diagnosed and treated by Hysteroscopy. Results :the main manifestation of patients with abnormal menstruation after artificial abortion was menolipsis or amenorrhea which was 69.76% . Abnormal menstruation after artificial abortion was mainly caused by intrauterine adhesion and gestational residue which was 81.95% and 13.65% respectively. The more were made artificial abortions ( especially more than 3 times )

the easier to happen was severe intrauterine adhesion ( P<0.05 ) . The longer was the time of menolipsis or amenorrhea after artificial abortions

the more severe was intrauterine adhesion ( P<0.05 ) . Conclusion : Hysteroscopy is an effective method to diagnose and treat abnormal menstruation after artificial abortions.