The invention discloses a 
toilet cushion cover type leakage repairing and preventing method. The method comprises the steps that a 
toilet concrete floor and a wall are leveled; bottom layer waterproof blocks are laid on the leveled floor, overlapped pressing seam waterproof strips are arranged at seams between the bottom layer waterproof blocks, and the bottom layer waterproof blocks and the pressing seam waterproof strips are adhesively connected through adhesives, so that the bottom layer waterproof blocks form an integrated waterproof 
cushion cover, and the waterproof 
cushion cover and the floor are not adhesively connected; a floor tile sand 
cement layer is laid on the waterproof cushion cover, and floor tiles and wall bricks are embedded. Wall 
foot right-angled waterproof blocks are arranged at the foot of the wall. The two right-angled sides are attached to the bottom-layer waterproof blocks and the wall. Side lines on the wall and the bottom-layer waterproof blocks are adhesively connected through the wall pressing seam waterproof strips and the wall foot waterproof blocks pressing seam strips in an overlapped mode. According to the 
toilet cushion cover type leakage repairing and preventing method, the traditional leakage repairing and preventing concept is changed, the method of hidden separation of the waterproof material layer and the floor is adopted, displacement space is reserved for uncertain activities such as floor 
cracking, eye leakage and hidden gaps caused by possible house 
sedimentation or environment temperature changes or concrete quality or the like, the waterproof material layer is prevented from being torn, permanent tightness is achieved after one-time treatment, the repairing and preventing effect is good, construction is easy, the consumed materials are few, and the cost is low.