Provided is a bite registration tool configured to properly adjust its inclination in taking a bite registration and with which an accurate bite registration can be taken. The bite registration tool includes a rear curved plate that has a curved plate shape and is to be arranged between lips and alveolar ridges of a patient and a front curved plate that has a plate shape, arranged in a manner that one plate surface faces to the rear curved plate having a predetermined gap, to be arranged forward having contact with the lips, wherein the other plate surface of the front curved plate is provided with at least one ridge protruding and extending in a predetermined direction.
