The invention provides a wearable cervical vertebra massager. The wearable cervical vertebra massager comprises a flat plate, semi-toroidal guide rails, massage units, steering engines, an inner gear ring, a guide rail sliding groove, gears, servo motors, sliding blocks, rear discs, electric cylinders, front discs, spherical hinge supports, rotary wheels, direct current motors, connecting rods, floating shafts and pressing wheels. The wearable cervical vertebra massager is characterized in that the flat plate is a rectangular plate, the two steering engines are symmetrically installed below the flat plate, output shafts of the steering engines penetrate through the flat plate, one semi-toroidal guide rail is installed on the output shaft of each steering engine, the two semi-toroidal guide rails are controlled by the two steering engines to be opened and closed respectively, and the two semi-toroidal guide rails are closed to form a whole circle guide rail. By arranging the two semi-toroidal guide rails capable of being opened, a user can conveniently wear the wearable cervical vertebra massager on the neck, the posture of the front disc can be adjusted in an omni-bearing mode through the six electric cylinders, and the neck of the user can be massaged more comprehensively.