We report the case of a 73-year-old man who developed bilateral vertebral artery dissection after a craniocervical contusion. He fell into a side ditch, and suffered bruising on the head and neck. He was diagnosed with a sixth cervical vertebral fracture, cerebellar infarction, and bilateral vertebral artery dissection, and was treated conservatively. The location of the left vertebral artery dissection coincided with the region where the vertebral artery entered into the transverse foramen. We speculated that the deviation of the cervical vertebral body caused by the fracture led to left vertebral artery dissection. Regarding the right vertebral artery, we speculated that the hyperextension of the right vertebral artery caused by the forcible hit led to dissection, and subsequently an occlusion of the right vertebral artery. This case highlights bilateral vertebral artery dissection caused by trauma. The possibility of underlying vertebral artery injury should be kept in mind in patients with craniocervical trauma.