The invention discloses a special dyeing agent for textile fabric. The special dyeing agent for the textile fabric is prepared from, by weight, 6-10 parts of cobalt sulfate, 6-12 parts of aluminum ammonium sulfate, 6-10 parts of butyl methacrylate, 4-8 parts of ethyl acetate, 5-9 parts of camphor tree leaf extraction liquid, 4-10 parts of aluminum sulfate, 3-7 parts of glycerol, 1-5 parts of hydroxypropyl methyl cellulose, 1-5 parts of imidazoline, 2-6 parts of mica powder, 2-6 parts of dibutyltin dilaurate and 3-7 parts of iron oxide red. The special dyeing agent for the textile fabric, prepared through adjustment of the proportion of all ingredients, is easy to color, high in color fastness, less prone to color fading, bright in color and harmless to human bodies.