The invention relates to a portable back and neck rehabilitative apparatus which is provided with a crossed main frame. The crossed main frame is provided with a U-shaped front neck support, the inner side of the U-shaped front neck support is provided with a jaw support, the rear portion of the U-shaped front neck support is provided with a U-shaped rear neck support, the U-shaped rear neck support is rotatably provided with a rear neck pressing plate, the jaw support is provided with a mandible supporting plate, the rear neck pressing plate is arranged corresponding to the mandible supporting plate, the rear portion of the crossed main frame is provided with a back support, the back support is provided with a front frame and a rear frame, the front frame is provided with two rows of pricking nails, the rear frame is provided with a lifting rack, the front portion of the lifting rack is provided with two nail pressing idler wheels, the distance between the two nail pressing idler wheels corresponds to the distance between the two rows of the pricking nails, the lifting rack is provided with a lifting drive mechanism, the lower portion of the crossed main frame is symmetrically provided with two breast supports, and the breast supports are provided with breast trays. The portable back and neck rehabilitative apparatus can relieve pain of the back, the neck and the breast, and is simple to operate and convenient to carry.