Yarn-dyed fabric is to dye cotton, linen and other fibers during weaving, dye the cotton and linen fibers in advance, and then spin them into fabrics after the fibers are dyed. The advantages are that the coloring and spinning can be carried out continuously, the coloring is uniform, the color fastness is high, the dye uptake rate is high, the production cycle is short, and the cost is low, and it can color some highly oriented, non-polar and difficult to dye chemical fibers.