ABSTRACT Objective To investigate the ultrasonographic features of uterine rupture during pregnancy and its clinical diagnostic value.??Methods A retrospective analysis was performed about patients diagnosed with of uterine rupture in our hospital from February 2014 to July 2021. All patients were divided into complete rupture group and incomplete rupture group according to surgical findings. Clinical data such as pregnancy history, obstetrics and gynecology related operation history, ultrasonic image characteristics and maternal and infant prognosis were recorded. The time and site of rupture, ultrasonographic image characteristics, diagnostic rate and missed diagnostic rate of different types of uterine rupture were analyzed. Results A total of 35 cases were included in the study. The proportion of patients with induced abortion history in the complete rupture group was significantly higher than that in the incomplete rupture group, while the proportion of patients with cesarean section history in the incomplete rupture group was significantly higher than that in the complete rupture group (P < 0.05). 16 cases were patients with complete uterine rupture including 9 cases in late pregnancy, 5 cases in middle pregnancy, and 2 cases in early pregnancy.??13 cases of complete uterine rupture were diagnosed by ultrasonography, and the diagnostic rate was 81.2%. Ultrasound images showed a clear or unclear break of myometrium and serosal layer with a complete or broken amniotic sac, hypoechoic hematoma around the site of rupture. 3 cases in the late trimester were missed diagnosed as the reason that uterus was broken in the posterior wall of uterus. There were 19 cases of incomplete uterine rupture, 2 cases in early pregnancy and 17 cases in late pregnancy. 6 cases of uterine incomplete rupture were diagnosed by ultrasound with the diagnostic rate of 31.6%. Ultrasonographic imaging indicated that only uterine serosa was found in the site of rupture.??13 cases of late pregnancy cases were missed diagnosed.??Conclusions Most of the complete uterine rupture can be diagnosed by ultrasound through the typical imaging features with a high diagnostic rate. While for complete uterine rupture of atypical images and incomplete uterine rupture,?we should be aware that the atypia of clinical symptoms will interfere with the diagnosis, and pay attention to the medical history. Emphasis on the routine measurement of the lower uterine muscularity before late pregnancy in patients with scar uterus to improve the diagnostic efficiency.