Sponge city road and construction method

The invention discloses a sponge urban road and a construction method, and relates to the field of road drainage, and the sponge urban road is characterized by comprising an asphalt layer and a base layer located below the asphalt layer, drainage ditches are arranged on the two sides of the base layer, a water collecting groove is formed in the top surface of the asphalt layer, and a water seepage filler and a supporting block are arranged in the water collecting groove; prefabricated channels are fixedly connected to the bottom faces of the water collecting grooves and used for communicating the water collecting grooves with the drainage channels, the ends, close to the water collecting grooves, of the prefabricated channels are higher than the other ends of the prefabricated channels, and the supporting blocks are located between the adjacent prefabricated channels. When it rains and part of rainwater flows through the water collecting tank, the rainwater infiltrates downwards through the water seepage fill