The definition of angular pregnancy is different, and the diagnosis is difficult. At the same time, the results of a single examination may not be enough to diagnose, and sometimes there will be misleading. Therefore, dynamic monitoring is very important for diagnosis and follow-up management. Compared with pelvic MRI or laparoscopy, ultrasound has the advantages of economy, convenience, time saving and strong operability. This paper reported a case of angular pregnancy with a strong desire to continue pregnancy. Ultrasound was used for dynamic monitoring, such as observing the size and position of the gestational sac, its association with the endometrium, and the thickness of the muscular layer of the uterine corner. Ultrasound follow-up showed that she had an eccentric intrauterine pregnancy and delivered to term successfully. This case suggests that ultrasound can be used for dynamic monitoring of such patients, but it is better to confirm early diagnosis with standardized examination by an experienced physician. If necessary, three-dimensional ultrasound, pelvic MRI and laparoscopy can be used to assist diagnosis. In addition, it is also necessary to pay attention to multi-discip-linary, all-round and full-process standardized management to avoid blindly giving up and improve maternal and infant outcomes.