▎ 摘　　要

NOVELTY - Colored polylactic acid tow comprises material A, material B and an appropriate amount of dye. The material A is calculated according to the total mass percentage of the tow, and includes: 45-89 wt.% crystalline polylactic acid, and 0.02-0.2 wt.% nucleating agent. The material B includes 7-45 wt.% non-crystalline polylactic acid, and 3.8-9.98 wt.% color fixing material. USE - Colored polylactic acid tow. ADVANTAGE - The colored polylactic acid tow has good heat resistance and excellent coloring performance and color retention. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing colored polylactic acid tow, which involves: (A) taking materials according to ratio of raw materials to prepare polylactic acid nascent tow; (B) coloring the nascent tow in a water bath to get a colored polylactic acid tow; and (C) taking water-bath drawing and coloring of the nascent tow as aqueous solution.