Pregnancy rates,endometrial thickness and cervix Insler score in the day of injection of HCG were higher in LE group than CC group. And early abortion rates was lower in LE group than CC group.

• 妊娠率来曲唑组高于克罗米芬组,而HCG肌肉注射日子宫内膜厚度克罗米芬组薄于来曲唑组,肌肉注射HCG日子宫颈Insler评分克罗米芬组低于来曲唑组,早期流产率克罗米芬组高于来曲唑组;