Objective To improve the ultrasound diagnostic accuracy rate of Intrauterine Adhesions. Methods Retrospectively analysis of 476 intrauterine adhesions cases were diagnosed by the transvaginal color ultrasound. Results Main imaging characteristics of 476 IUA cases were endometrial echo interruption, uneven thickness, et al. Combining ultrasound with clinical performance, the data was classified into three types: mild IUA, moderate IUA, severe IUA. 71 cases of severe IUA were treated with hysteroscopy surgery. Conclusion Transvaginal ultrasound with clinical data diagnosis for the intrauterine adhesions has higher practical value. The classification is helpful for making the treatment plan.