The utility model discloses a device for surface drainage capability test, including setting up the road surface horizontal wall inscription simulation platform on the base, the top of slope top of road surface horizontal wall inscription simulation platform is provided with the water tank, and the inlet opening that can adjust the bore size is seted up to the water tank bottom surface, and the base of slope of road surface horizontal wall inscription simulation platform is provided with the collecting container of water-collection device, water-collection device export intercommunication discrete, said road surface horizontal wall inscription simulation bench is provided with incline breakwater and base of slope breakwater, and inside test of cell body at side breakwater and base of slope manger plate hoarding one-tenth is placed to side breakwater and base of slope breakwater swing joint, sample, and the collecting container takes out after the test and weighs the utility model discloses the different slopes of road surface horizontal wall inscription and different speed of flooding can be simulated, the assay to different material surface drainage performance is realized, while this device easy operation, evaluating indicator is clear and definite, is applicable to the test of different pavement material drainages ability