present invention provides a physiological three-dimensional articulator provided with a mechanism for reproducing movements of an upper jaw position and a lower jaw position, in which the center of rotation of a lower jaw frame provided in the reproducing mechanism for the lower jaw position is operated in the mouth opening and closing movement in the same manner as a rotation of a lower jaw of a human body which permits mouth opening and closing movement while it is moving, and additionally a mechanism for moving the lower jaw frame in the up and down direction simultaneously with the movement of the center of rotation is provided. With this construction, the movement of the lower jaw frame can be simulated to the real movement of the lower jaw in the human body.