Objective      To explore the role of ultrasound in differential diagnosis of partially septate uterus with early pregnancy by analyzing sonographic features of 42 cases of partially septate uterus with early pregnancy.        Methods      A total of 42 pregnancy women with partially septate uterus

who were diagnosed by ultrasound and/or clinics in the university town hospital of Chongqing medical university from September 2012 to September 2015

were enrolled in this study. The ultrasonographic features and diagnostic characteristics of partially septate uterus with early pregnancy (14 weeks) were analyzed.        Results      The pregnancy women had a medium age of 28.5 years old. Thirty-nine patients were diagnosed with partially septate uterus with early pregnancy by ultrasonography

and 35 patients were diagnosed as partially septate uterus with early pregnancy by clinical follow-up. The accuracy of ultrasound diagnosis was 83.33% (35/42). Four cases were false positive

including 3 cases of intrauterine pregnancy

and 1 case of cornual pregnancy. The false positive rate was 9.52%. Three cases were false negative

including 2 cases of intrauterine pregnancy and 1 case of cornual pregnancy. The false negative rate was 7.15%.       Conclusion      Ultrasound examination has certain specificity and accuracy in diagnosis of early pregnancy in the women with partially septate uterus

and can be used for guiding clinics.