The utility model discloses an inspection well step mounting and positioning device in the technical field of inspection well construction, which is characterized in that an arc surface matched with the inner wall of an inspection well is formed on a cross rod, and a positioning plate is mounted on the cross rod in a sliding manner along the outline of the arc surface of the cross rod through an adjusting unit, so that the positioning plate can be adjusted to a required position on the ground; the transverse rod is placed in the inspection well to be attached to the well wall of the inspection well, the positioning holes are formed in the positioning plate, the positions of the positioning holes represent the positions where holes need to be formed when the step is installed, an operator only needs to penetrate a
drill bit through the positioning holes to
drill the well wall of the inspection well, the drilling accuracy can be guaranteed, and the accuracy of follow-up step installation is guaranteed; according to the inspection well, the procedures of line drawing and dotting in the inspection well are omitted, the time of high-altitude operation is shortened, the operation risk is reduced, meanwhile, the cross rods are matched with the
diameter of the inspection well, the positions of the positioning holes are more accurate, the positioning accuracy is improved, final step installation can reach the acceptance standard, and reworking is prevented.