Blunt trauma of the scrotum is sometimes associated with severe injuries such as testis rupture. However, there are few reports of traumatic rupture of the epididymis with blunt scrotal trauma. In addition, severe epididymis injuries after scrotal trauma are always associated with severe testis trauma. We experienced a case of solitary rupture of the left epididymis that occurred in a traffic accident. We report herein such a case and review the literature. To our knowledge, this case is the 4th case of solitary epididymis rupture by blunt scrotal trauma.