The invention provides a wire winding mechanism. The wire winding mechanism includes a mounting block with a plurality of mounting holes, the lower portion of the mounting block is provided with a connection part, the connection part and the mounting block are integrally formed, a wire-winding head fixing block is arranged on the connection part, a penetrating through hole is formed in the wire-winding head fixing block, a wire-winding head is mounted in the through hole, the wire-winding head is formed by splicing a first guide needle and a second guide needle, the first guide needle and the second guide needle both comprise a needle head, a needle bar and a needle tip, a wire passing-through channel for the needle bar to penetrate through is arranged from the needle head to the needle tip, and the distance between the wire passing-through channel of the first guide needle and the wire passing-through channel of the second guide needle forms a wire-winding interval. The wire winding mechanism is simple in structure, good in uniformity and convenient to replace and maintain; according to the wire-winding head, two guide needles are adopted to be spliced into a double-hole guide needle through treatment, two wires can be wound synchronously, the effect is ensured that the center distance between the two wires is fixed, and the production efficiency and the product finishing rate are effectively improved.