(Amended) A vehicle LED lighting device comprising a drive control means performing drive control of an LED lamp (20, 30) installed in a vehicle, and wherein the drive control means includes an abnormality detection means detecting a disconnection or short-circuit abnormality of the LED lamp (20, 30), the abnormality detection means includes: a current detection unit detecting the value of a current flowing through the LED lamp (20, 30) when the LED lamp (20, 30) is driven by the drive control means, a comparison unit comparing the current value detected by the current detection unit with a predetermined abnormality determination value, and characterized in that the abnormality detection means further includes: a determination value switching unit switching the abnormality determination value in accordance with variation of a power supply voltage of the vehicle, and wherein the abnormality detection means is configured to judge whether or not there is the disconnection or short-circuit abnormality based on the abnormality determination value switched by the determination value switching unit and the detected current value, wherein, in regard to the abnormality determination value for short-circuit detection, the abnormality determination value includes a first abnormality determination value that changes in accordance with the power supply voltage applied to the LED lamp (20, 30) and a second abnormality determination value that is greater than the first abnormality determination value and is a fixed value. a current detection unit detecting the value of a current flowing through the LED lamp (20, 30) when the LED lamp (20, 30) is driven by the drive control means, a comparison unit comparing the current value detected by the current detection unit with a predetermined abnormality determination value, and characterized in that the abnormality detection means further includes: a determination value switching unit switching the abnormality determination value in accordance with variation of a power supply voltage of the vehicle, and wherein the abnormality detection means is configured to judge whether or not there is the disconnection or short-circuit abnormality based on the abnormality determination value switched by the determination value switching unit and the detected current value, wherein, in regard to the abnormality determination value for short-circuit detection, the abnormality determination value includes a first abnormality determination value that changes in accordance with the power supply voltage applied to the LED lamp (20, 30) and a second abnormality determination value that is greater than the first abnormality determination value and is a fixed value. a determination value switching unit switching the abnormality determination value in accordance with variation of a power supply voltage of the vehicle, and wherein the abnormality detection means is configured to judge whether or not there is the disconnection or short-circuit abnormality based on the abnormality determination value switched by the determination value switching unit and the detected current value, wherein, in regard to the abnormality determination value for short-circuit detection, the abnormality determination value includes a first abnormality determination value that changes in accordance with the power supply voltage applied to the LED lamp (20, 30) and a second abnormality determination value that is greater than the first abnormality determination value and is a fixed value.