In order to investigate the effect of fiber cross-sectional shape and fiber assembly structure on water transmission property of a woven fabric, various types of ]ion-circular fibers were prepared. Two yarns of different total denier, and yarns of different cross-sections were used To compare the fabric properties more rigorously, the fabrics were woven in the same weaving loom under identical weaving conditions, except changing the weft yarns as mentioned above. To clarify the effect of fiber cross-section:11 shape on the water transmission properties of fabrics, vertical wicking strip test and GATS(gravimetric absorbency to testing system) were used. The absorbance of fabrics were measured by means of GATS. The vertical wicking height in fabric woven from U shaped yarn having lots of pore was higher. The amount of water transmission in fabric made of H/_Y shaped yarn was grater. For H/_Y shaped yarns, fabric has more spaces due to the different fiber density and cross-sectional shapes.