A multi-wire light string structure comprises two insulating parts, plural wires and a LED device. The two insulating parts are arranged with a gap. Each wire includes two ends embedded in the two insulating parts and an exposed section in the gap. The ends of the wires are located on a hypothetical plane, two ends of each wire are located on a hypothetical axis, and at least one exposed section is bent to deviate from the corresponding hypothetical axis. The LED device includes a light emitting side and a mounting side. The LED device is located on an upper side of the hypothetical plane, and the mounting side is soldered to at least two of the exposed sections.