To provide a temperature detection method capable of detecting a temperature rise of each apparatus and device, and preventing a damage caused by abnormal heat generation or preventing spread of the damage to the minimum, and a device having the method.

In this device equipped with a temperature detection line disposed on at least one or more portions to be measured, and expanding and contracting by a temperature change; a positioning means for supporting the temperature detection line; and an abnormal temperature detection means for detecting a tension state of the temperature detection line by expansion of the temperature detection line or rupture of the temperature detection line caused by a temperature rise of the portion to be measured, the temperature rise of the portion to be measured is detected by the tension state of the temperature detection line.