The utility model discloses a dykes and dams construction of sponge city is with prefabricated building block of permeating water, including two loading boards that are parallel to each other, first spout that the upper end both sides of two loading boards all were equipped with, install two first sliders in the first spout, be a set of with two first sliders of one side, with being fixed with thecarrier block on two a set of first sliders jointly, the both sides of carrier block all are equipped with first bolt, the upper end both sides of first slider all are equipped with two first screw thread through -holes. The utility model discloses rational in infrastructure, the practicality is strong, through the cooperation of first bolt and second screw thread through -hole, can adjust the position of carrier block, conveniently solves the rubbish of different positions, and simultaneously, the cooperation through crank and screw rod makes highly can adjusting of its arresting barrier, makes the effect of its interception more obvious, has reduced river pollution, has protected the environment, and economic value is high with use value, suitable popularization.