【Abstract】 ObjectiveTo compare the efficacy between hysteroscopic dissection using micro scissor and hysteroscopic electrodissection for intrauterine adhesion with different degrees. MethodsA total of 138 patients with intrauterine adhesion were randomly divided into micro scissor group and electrodissection group. The surgical efficacy, score of adhesion classification, the increased thickness of postoperative endometrium, operation duration, intraoperative blood loss, the difference between distention fluid intake and output were observed. ResultsThere were no significant differences between the two groups in the effectiveness rate, the difference between the first and the second intrauterine adhesion scores, the increased thickness of postoperative endometrium, the difference between distention fluid intake and output(P＞0.05). The operation duration and intraoperative blood loss of the micro scissor group were longer or more than those of electrodissection group（P＜0.05）. For the moderate intrauterine adhesion, the difference between the first and the second intrauterine adhesions scores and intraoperative blood loss in the electrodissection group were less than those of the micro scissor group（P＜0.05）. For the cases of intrauterine adhesion with various degrees, the operation duration of the micro scissor group was less than that of the electrodissection group（P＜0.05）,but there were no significant differences in the other indices between the two groups（P＞0.05）. ConclusionFor the intrauterine adhesion, the hysteroscopic dissection using micro scissor can achieve a similar efficacy as electrodissection, but prolongs the operation duration compared with electrodissection. Operation using micro scissor can improve the score of intrauterine adhesion classification in the case with moderate intrauterine adhesion.

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