To provide a 6-course warp-knitted fabric that is suitable for the opal treatment by using hygroscopic sun yarn, synthetic fiber yarn and elastic yarn.

The synthetic filament 2 on the middle reed (reed L2) forms 3-courses of knitting stitches continuously to the knitting needles between the needle space 1 and the needle space 2, then shifts to the back next needle space and forms continuously 3-courses of knitting stitches to the kitting needles between the needle space 2 and the needle space 3, then shifts back to the original needle space and repeatedly forms 6-course of knitting stitches. The elastic yarn 3 on the back reed (reed L3) is knitted by inserting into individual stitches of the synthetic fiber 2, while the hygroscopic spun yarn 1 does not form continuously 2-courses of knitting stitches to the needles between the needle space 1 and the needle space but forms 1-course of knitting stitch on the 3rd course between the needle space 1 and the needle space 2, then does not form continuously 2-courses of knitting stitches to the needles between the needle space 1 and the needle space but forms 1-course of knitting stitch on the 3rd course between the needle space 1 and the needle space 2, then these 6-course knitting operations are repeated.