The invention discloses an anterior cervical subtotal subcorpectomy physiological fixation device, which comprises two retaining brackets connected with cervical vertebra, the bottom of retaining bracket is equipped with ball socket; it also comprises one adjustable device, the two ends of adjustable device are connected with bulb pole respectively, the end of bulb pole is provided with ball socket moveable junction, the outer part of adjustable device is equipped with lantern ring, which is connected with two anterior pedicle of vertebral arch screws, the end part of pedicle of vertebral arch screws is provided with rear pedicle of vertebral arch screws. The fixation device can be fixed subtotal subcorpectomy vertebra through pedicle of vertebral arch screw, the retaining brackets can be fixed with vertebral on the upper and lower part, which ensures the flexion and extension, rotary motion and axial motion between subtotal subcorpectomy vertebra and near vertebral, and thus reduces compensation motion for near vertebra and prevents vertebra degeneration.