The invention belongs to the technical field of textile machinery and equipment, and relates to a yarn guide device, which comprises a yarn guide plate and a yarn guide rod. The horizontal part of the yarn guide rod is fixedly connected with the yarn guide plate, the outer end of the yarn guide rod is bent upward, the yarn guide rod is provided with a slot in the longitudinal direction, and a yarn guide hole is opened at the upper end of the yarn guide rod. The yarn guide device has the advantages of simple structure, reasonableness and reliability, and at work, the yarn guide device of the invention is fixed by the rectangular groove and the slot, the yarn is guided by the guide hole, and the curved groove can effectively guide the yarn.