Seepage prevention construction method for bolt holes in exterior walls of buildings

The invention discloses a seepage prevention construction method for bolt holes in exterior walls of buildings. The method comprises the following steps of (1) scrapping and chiselling the inside and outside orifices of the bolt holes in shear walls so as to form V-shaped holes, flushing water for wetting the orifices after the orifices are cleared, blocking the outside orifices through polymer cement waterproof mortar when no water exists on the surfaces of the orifices, and compacting and flattening; (2) after the cement waterproof mortar in the outside orifices reaches three-day intensity, finely clearing the bolt holes; (3) after steel bars are implanted in the bolt holes for 48 hours, detecting whether the cement waterproof mortar for blocking the outside orifices of the bolt holes loosens, repairing the outside orifices in time if the loosening exists, and blocking and flattening the inside orifices by the cement waterproof mortar after the repair is finished; and (4) adopting a hot melting paving proce