The utility model discloses a geosynthetic material permeates coefficient measurement appearance perpendicularly, it includes that a sample withholds part, a vessel and a water catch bowl. The sample is withheld the part and is had the bottom plate of withholding, a transverse connection pole and a vertical connecting rod. The dress appearance hole of lining up about the bottom central authorities of vessel set up, vessel bottom upper surface are provided with the annular groove, the shape of annular groove and position with withhold bottom plate looks adaptation, placed an annular rubber circle on the annular groove, the transverse connection pole is fixed in the vessel top and locks with threaded connection spare. The water catch bowl is put in the vessel outsidely, has inside groove and water jacket, and the inside groove is filled water and inside groove water level and is higher than the vessel bottom, geosynthetic material await measuring the sample by the sample withhold the part compress tightly be fixed in vessel bottom and annular rubber circle on. The utility model discloses a geosynthetic material permeates coefficient measurement appearance perpendicularly dress sample prescription just can alone independently be accomplished, and the working efficiency improves than using the tradition to permeate the coefficient measurement appearance perpendicularly greatly.