Weaving method of cotton-polylactic acid fiber composite fabric

The invention discloses a weaving method of a cotton-polylactic acid fiber composite fabric, which comprises the following steps: S1, warp yarns are warped into a ball warp beam with 300-600 yarns per beam at a speed of 250m/min by adopting ball warp, and the warp yarns are cotton fiber/polylactic acid covering yarns formed by wrapping the outside of polylactic acid fibers with cotton fibers; s2, adding a proper amount of deionized water into a finishing agent consisting of low-viscosity starch, indigo dye, amino-terminated dimethyl silicone oil, methyl isobutyl ketone, sodium hydroxide, isopropyl-ketone and glycerol to prepare a finishing solution with the concentration of 100-150g/L; and S3, adopting a size taking combined process, completing warp dyeing and sizing processes at 50-100m/min and twice dipping and twice rolling, drying with hot air at 105-120 DEG C, then re-beaming, and weaving with weft on a machine to obtain the polylactic acid fiber composite fabric. The fabric woven by the weaving method i