The invention discloses a twisting machine for colored spun yarns. The twisting machine comprises a base, and a first support, a second support and a third support are fixedly arranged on the upper surface of the base; a through hole is formed in the second support, helical teeth are fixedly arranged in the through hole, a first gear, a second gear, a third gear and a driving gear are movably installed in the through hole of the second support, the first gear, the second gear and the third gear are movably arranged on the periphery of the driving gear, the driving gear is engaged with the first gear, the second gear and the third gear separately, and the outer edges of the first gear, the second gear and the third gear are engaged with the helical teeth on the inner wall of the through hole. According to the twisting machine for the colored spun yarns, the structural design is rational, plying of yarns is more compact, the quality and tensile strength of the yarns are improved, and the twisting machine has the advantages of being simple in structure, convenient to use and good in use effect.