In this study, a drainage-regulated type geotextile tube structure was proposed. The structure is composed of high permeability polypropylene(PP) and low permeability (PET) fabric in which the lengths of the fabric depend on the circumference ratio of the cross section. The purpose is to reduce the pressure inside the geotextile tube structure during filling as much as possible. Experimental study on the characteristics of the geotextile tube structure according to the permeability of the geotextile was also carried out. Experimental results of 4 small scaled geotextile tube structures showed that the bottom section formed as drainage type can reduce the filling pressure as well as increase the sedimentation height which confirms as the optimum cross section of the tube.