Arcuate uterus accounts for 10% of malformed uteruses. Its diagnosis and clinical significance have been controversial. It is diagnosed by measuring the protrusion of the septal version into the uterine cavity with a length <37.5px< span=""> as a bowed uterus and ≥1.5 cm as a uterine septum, using the line joining the opening of the fallopian tubes on both sides as the base line. Three-dimensional ultrasound provides an accurate diagnosis based on a sharper bilateral endometrial angle of 64-90° in an incomplete longitudinal uterus and a bluntly rounded endometrial angle of 103-152° in a bowed uterus [2]. Hysteroscopy of the endometrium of the uterine fundus in an incomplete longitudinal uterus reveals a slightly protruding uterine fundus with deep endometrial angles on both sides. Laparoscopy shows a normal or depressed fundus contour (saddle-shaped uterus). Zlopasa et al [3] reported a high rate of preterm delivery in bowed uterus, with significantly lower gestational age and birth weight compared to other malformed uterine pregnancies. The rate of miscarriage decreased and the rate of delivery increased after hysteroscopic orthoplasty. Mucowski et al [4] noted that previous literature does not support a poor reproductive prognosis in bowed uterus and hysteroscopic orthoplasty is not generally accepted. Therefore, clinicians should administer individualized treatment in symptomatic patients after determining the absence of other infertility factors.Gergolet et al [4] prospectively studied incomplete septum and bowed uterus with at least one history of fetal abortion, and the incidence of fetal abortion was significantly higher in both groups before hysteroscopic orthoplasty and similar after orthoplasty, 14% in the former and 11% in the latter, with a significant difference in both before and after orthoplasty (p < 0.001)< span="">, and on this basis, the reproductive prognosis before and after orthopedic correction of the bowed uterus was considered the same as that of the incomplete septum.