The invention provides a pervious concrete and a preparation method thereof. The pervious concrete comprises the following components in percentage by weight: 15-25% of cement, 1-3% of mineral admixtures, 65-75% of coarse aggregate of building wastes, 6-13% of coarse aggregate of steel slag waste, 5-10% of glass fiber, 0.10-1.10% of water reducing agent, and 4-8% of water. With the adoption of theprevious concrete, fallen water can timely permeate the land, and moreover, the building wastes and the steel slag wastes can be effectively utilized, so that the secondary utilization of the wastescan be achieved.