The invention relates to the technical field of textile fabrics, in particular to a production process of a yarn-dyed fabric. The production process comprises the following steps of S1, conducting cheese dyeing: raw yarn preparation, yarn bobbin loosening, dyeing, dehydration, drying, rewinding, warping, sizing, gray yarn inspection, singeing, desizing, mercerizing, sizing, preshrinking and finish inspection, wherein the sizing speed is 40m/min, the sizing percentage fluctuation is within the range of +/-1%, and a sizing agent formula adopted in the sizing process comprises 85 parts of starch, 3 parts of polyacrylic acid sizing agent, 2 parts of polyester cotton sizing aid, 0.01 part of starch viscosity reducer and water; S2, weaving: winding a qualified cheese on a warp beam through a warping machine, wrapping with the sizing agent, drafting, and weaving through a loom; and S3, conducting gray fabric inspection. According to the production process of the yarn-dyed fabric provided by the invention, a yarn bobbin is extruded discontinuously by adopting a dye liquor inlet adjusting mechanism, so that all positions of the yarn bobbin are filled with dye liquor, and the dyeing efficiency of the yarn bobbin is improved.