A high-stability optical fiber colorizing device used for optical fibers and cables is disclosed. The device includes an unwinding frame, a printing ink coating frame, a fixing frame, a traction frame and a winding frame which are arranged in order. At least two optical fiber passages are formed from top to bottom. An unwinding and arranging unit and a winding and arranging unit both comprise pedestals with grooves, left and right supporting bases, rotating motors and marching rotors. Surfaces of each pedestal, at two sides of a corresponding groove, are fixed to two x-direction linear guide rails. Two sides of the lower surfaces of each left supporting base are fixed to first x-direction sliding blocks. Two sides of the lower surfaces of each right supporting base are fixed to second x-direction sliding blocks. The x-direction linear guide rails are embedded in grooves of the first x-direction sliding blocks and second x-direction sliding blocks respectively. X-direction driving mechanisms between the two x-direction linear guide rails are mounted in the grooves of the pedestals and below the right and left supporting bases. An air cylinder is fixed to and at the outside end of each left supporting base. One end of an ejector rod mechanism of each air cylinder is connected to the air cylinder. The device achieves a function of coating three optical fibers simultaneously without interferences, and achieves stable performance, high frame rigidity and stable overall supporting.