The invention discloses a method for preparing pervious concrete with sustainable water purifying capability. The method comprises the steps: firstly, baking a material with adsorption performance, which serves as a raw material, then, calcining the material in a muffle furnace, carrying out crushing, and then, carrying out sieving, so as to obtain a specified size; stirring a certain mass of cementing material and water in advance, adding a certain mass of water reducing agent during stirring, then, adding a certain mass of gravels and adsorption material, carrying out uniform stirring, then, loading a mixture to molds for molding, and carrying out curing for a certain time under natural conditions for later use. By reasonably utilizing the adsorption material, the pervious concrete not only has good water permeability and mechanical properties, but also has water purifying capability. Currently, the environmental pollution is serious, and thus, the pervious concrete has a broad application prospect.