Disclosed is a thread feeding method (the method) for feeding threads to a weaver. The method includes a step of feeding a multiplicity of strands of yarns with intervals to each line of the thread feed lines, while some strands of the multiplicity of strands of yarns are being separated from the other strands according to color or shade to be expressed at spots where they are either woven or knitted and are then fed to the weaver such that the colors or shades of the separated strands are combined to express target colors or shades at the spots where the strands are woven or knitted. The method of the present invention allows changing of colors or black and white shades of the threads being fed to the weaver. The method also allows the strands to be combined with other strands of yarns with different colors to express tens or hundreds of colors on a fabric.