The purpose of this study is to characterize physical and tensile properties according to a knitting method as basic materials for solving the difficulties that occur due to the fact that the crosswise elongation is most different among knit stitch at the time of measuring elongation of knitwear. The sample used for this study was wool $100\%$ and was knitted into two, that is, controlled loop length controlled to properties of structure and fixed loop length by using Shimaseiki SES-124S 12G computer automatic flat knitting machine with DSCS device. Also, the density of rib fabric was 12gauge and its quantity was a total of seven of $0{ imes}0,;1{ imes}1,;2{ imes}1,;2{ imes}2,;3{ imes}3,;4{ imes}4$ and including plain fabric, and knitted 2 pieces of sample of 300 wale${ imes}400$ course. In conclusion, rib stitch has the much higher stretch rate in the direction of the course than other stitches.