The utility model provides a qualities of in bury waterstop installation are improved fender head mould board, its concrete structure adopts two sections wooden models and reinforcing bar hasp, one ofthem wooden model length is buried the waterstop in according to and is highly set up length, and another wooden model sets up length according to inverted arch thickness, the reinforcing bar hasp comprises two 18 reinforcing bars of phi, and two steel bar end socket link together and can rotate. The utility model discloses culvert, the not good device of tunnel water proofing effect are effectively solved to the installation quality of burying the waterstop in can effectively improving, still can improve simultaneously the roughness of concrete seam crossing. Culvert, the not good device oftunnel water proofing effect are effectively solved to the installation quality of burying the waterstop in can improving.