The invention discloses a device for evaluating the influence of different factors on asphalt pavement water-permeability performance. An outer cover is buckled on a base; each ascending and descending rod is vertically fixed on the base; a circular disc is connected with the upper end of each ascending and descending support rod; the upper end of an oil pressure machine and the upper end of each water-permeability test instrument are fixed at the bottom of the circular disc; a water filtering net is connected with the side surface of each ascending and descending support rod; a part to be tested is positioned on the water filtering net, and is positioned under the circular disc; the lower end surface of an output shaft of the oil pressure machine and the lower end surface of each water-permeability test instrument are in contact with the upper surface of the part to be tested; all of the water-permeability test instruments are uniformly distributed around the oil pressure machine; the distance between each water-permeability instrument and the oil pressure machine in each water-permeability test instrument is different. The device can obtain the influence of the temperature and the load on the asphalt pavement water-permeability performance; meanwhile, the water-permeability distribution condition in positions with different distances from the load center can be obtained.