Abstract: Oblique vaginal septum syndrome (OVSS) is a rare malformation of the female urogenital system. Its clinical manifestations are complex and diverse. It is easy for physicians to misdiagnose or fail to diagnose OVSS. Ultrasound can make a comprehensive and objective assessment of the lesion, which is the preferred imaging method for the diagnosis of OVSS. This article mainly reviews the application value of ultrasonographic technology in the diagnosis of OVSS.