The utility model discloses a permeability tester for a grouting material. Road engineering test tool, in order to solve the technical problems that the grouting pressure of each component during polyurethane grouting cannot be adjusted by the conventional common grouting material permeation equipment, and the grouting proportion cannot be randomly adjusted, the utility model adopts the technicalscheme that the grouting material permeation equipment structurally comprises a grouting system and a permeation simulation system communicated with the grouting system, the grouting system comprisesat least two air compressors, storage tanks and a mixed storage container, the air compressors are communicated with air inlets of the storage tanks through air delivery pipes, liquid adding holes areformed in one sides of the air inlets of the storage tanks, the liquid adding holes and the air inlets are located in the upper ends of the storage tanks, and liquid delivery holes are formed in thelower ends of the storage tanks; wherein a flow meter is arranged on the infusion tube; a pressure regulating valve is arranged on the air delivery pipe between the air compressor and the storage tank, a pressure limiting valve is arranged on the air delivery pipe between the pressure regulating valve and the air compressor, and a pressure gauge is arranged on the air delivery pipe between the storage tank and the pressure regulating valve.