3D color ultrasound can reveal uterine diverticula. Three-dimensional ultrasound is a kind of ultrasound technology with three-dimensional imaging, which is mostly used in clinical practice to observe the appearance of the fetus and to detect fetal malformations. Uterine diverticulum is a diverticulum-like lesion that is connected to the uterine cavity and protrudes into the uterine cavity after uterine surgery when the myometrium and endometrium of the uterus do not heal well, and a diverticulum-like lesion is formed at the surgical site that is connected to the uterine cavity. It can cause abnormal vaginal bleeding, chronic pelvic pain, and secondary infertility. Two-dimensional ultrasound, i.e., transabdominal or transvaginal ultrasound, is the method of choice for screening and evaluation of uterine diverticula. Of course, three-dimensional ultrasound can visualize the diverticulum more intuitively and three-dimensionally. The presence of diverticula requires active medical consultation and reasonable treatment options under the guidance of a doctor.