PURPOSE: To provide the cervical vertebrae traction device which is simple and is high in treatment effect by providing a cervical vertebrae collar with means for adjusting sizes and a hermetic container having an air suction port.

CONSTITUTION: This cervical vertebrae traction device is composed of screws 3b, 3c and screw holes 6b, 6c as the means for adjusting the size in the circumferential direction of the cervical vertebrae collar 1, a first supporting part 3 for supporting the mandibular part, a second supporting part supporting the rear head, the hermetic container 4 and a pressure gage 10, a pump 11 and a valve as means for regulating the air pressure.