The invention provides a soybean protein colored fiber and production method. There is activated dye in soybean protein colored fiber. The production method is described as: during the process of making up filature original fluid, activated dye is put in, then colored fiber of plant protein whose density is 0.7-3.0dtex is ripened, get together and slubbed through technology of wet method filature in reactor. Because activated dye is put in during making up fluid coloring and sessile rates are increased. Coloring firming degree of the colored fiber can reach five grades after measuring. |