This invention discloses a leakproofing framework. It includes the framework which front face is designed a convex arris or groove to match the shape of building blocks. The convex arris or groove are lengthwise strip convex arris or run-through groove. The strip and sectional groove can be a shape of square, triangle, trapezoid or arc. The convex arris or groove can be a structure like horse teeth, which single unit should be a ’™shape, trapezoid or slope. On the surfaces of concrete poles or beams of form casting of this invention will appear proper grooves or the convex arrises which closely bond with the tops of building blocks, so it can reduce the chances of splitting between the bonding body and concrete poles, improve the building cohesion and minish the leakage in the joint of the bonding body and concrete poles. Therefore, this invention can minimize or entirely solve the leakage resulting from the splitting, and it is easily operated and costs lower.