The utility model provides a taper liner iron connection structure, is including setting up the stock in the concrete, the lower extreme of stock passes the concrete, is provided with the voussoir iron and concrete contact plate that are located concrete below on the stock, on the concrete contact plate was fixed in the inclined plane of clapboard, the lower fixed surface of voussoir iron had the notch plate, the lower surface of notch plate is provided with the concave arc face, the below of notch plate is provided with the convex cushion, the upper surface of convex cushion is the convex arc face, the convex arc face can be laminated with the concave arc face, the below of convex cushion be provided with with the stock complex nut that excels in. The utility model discloses can directly avoid still can not reaching the circumstances of level and smooth state behind the taper liner iron owing to the reason of inclined plane itself or taper liner ironworking has resulted in using, can make the bolt closely connected through taper liner iron adapter, be used for very much hanging and adopt the bolt anchored circumstances behind the basket under the stock on the anchor point to guaranteed that the bolt atress is even, makeed the roof beam section and the fastness of string basket strengthen, avoided causing destruction to high strength bolt.