A power supply cord set includes a power connector and a power cord. The power connector includes an insulating body, a first conducting element and a second conducting element. The second conducting element includes a first conducting part having a first connecting segment and a second connecting segment. The power cord includes a first multi-core wire and a second multi-core wire, which are covered by the external insulating cover layer. The internal insulating cover layer is partially extended out of a distal aperture of the external insulating cover layer. The bare wire portion of the first multi-core wire is fixed on the first conducting element of the power connector. The bare wire portion of the second multi-core wire is fixed on the first connecting segment of the second conducting element. A terminal part of the internal insulating cover layer is fixed by the second connecting segment.