The utility model relates to an improvement of drainage fastener, specifically speaking is a clamp plate formula load transfer fastener. Including connecing drainage line board and hand (hold), connect and be equipped with the convex splint of deciding between drainage line board and the hand (hold), decide splint in arc and be connected to articulate with the hand (hold) and have arc rotation splint, the convex other end that rotates splint is through being fixed on the screw rod by clamp plate and nut, and this screw rod decides splint with arc and the hand (hold) is fixed as an organic whole. This shifts fastener simple structure, the dismantlement is convenient, the cost of manufacture is low, and both easy to operate also was difficult to by the wire of centre gripping, reduced the live working time simultaneously, improved and join in marriage net twine way service reliability.