Provided is a cervical spine brace which transfers optimal stimulation to each portion of the cervical spine so as to enable more efficient correction. The cervical spine brace comprises: a support block disposed to be placed on the back of the neck between the head and the back and having an arch part corresponding to the arch of the back of the neck; and a plurality of pressing plates which are connected in pairs at opposite sides of the arch part of the support block, make an inclination toward the back of the neck from the support block, and have one or more edges at end portions thereof, the edges being arranged to form pressure points on different spots of the back of the neck depending on height of the arch part.