The present invention discloses a method for fixing a dental implant hole preparation mechanism and a teeth-biting adjustable-control drill bit guide plate. The method for fixing the dental implant hole preparation mechanism includes: placing the dental implant hole preparation mechanism into an oral cavity first and then getting the dental implant hole preparation mechanism fixed by biting upper teeth and lower teeth jointly. The fixation of a guide plate is implemented by teeth biting of an implant object, so that the fixation difficulty is reduced, and the poor fixation precision and the stability are improved. The teeth-biting adjustable-control drill bit guide plate for implementing dental implant hole preparation includes upper and lower biting plates controlled by upper and lower teeth, and an adjustment mechanism for adjusting the upper biting plate and the lower biting plate multi-directionally. When the teeth-biting adjustable-control drill bit guide plate is used, positions of the upper and lower biting plates are adjusted, so that an implant handpiece drill bit is consistent with a designed implant prepared hole in direction after teeth biting fixation, thus implementing accurate control on an implant handpiece； and as the adjustment to the position of the implant handpiece is achieved by adjusting the positions of the upper and lower biting plates, the teeth-biting adjustable-control drill bit guide plate can be adapted to different dental implant positions only by replacing a tooth die or an alveolar bone die； and therefore, not only is the universality of the guide plate improved, but also the manufacturing time of the implant guide plate can be reduced.
