The utility model discloses a color yarn production device, comprising a slice hopper, a screw extruder, a function master batch hopper, a spinning manifold, a lubricating nipple, a drawing roller, a sizing roller and a winding head, wherein the screw extruder is communicated with the slice hopper and is used for receiving slices, the function master batch hopper is used for providing coloring master batches to the screw extruder and is communicated with the screw extruder through a master batch injection machine, the spinning manifold is connected with the discharge end of the screw extruder through a melt pipeline and is internally provided with a metering pump and a spinning assembly, the metering pump is communicated with the spinning manifold and is connected with the spinning assembly in sequence along the flowing direction of color fluid, the lubricating nipple is positioned below the spinning assembly along the spinning direction, the drawing roller and the sizing roller are positioned between the lubricating nipple and the winding head and are used for drawing a color yarn and sizing the color yarn respectively, and the winding head is used for winding the sized color yarn. The color yarn produced by the production device has the excellent characteristics of high intensity, excellent color fastness and low shrinkage in boiling water, and printing and dyeing wastewater cannot be generated.