Temperature calibrating method and device

The present invention provides a method and device used for temperature calibration. The device comprises a calibration resistor possessing a resistance value relevant with the temperature; a measurement module coupled with the calibration resistor and used for acquiring the resistance value information of the calibration resistor at different temperatures and outputting the corresponding measurement values; and a data processing unit coupled with the measurement module and used for determining the corresponding relation between the resistance values of the calibration resistor and the measurement values based on the plurality of measurement values and the resistance values of the calibration resistor corresponding to the plurality of measurement values. According to the present invention, a temperature sensor and the measurement module are calibrated separately, when a fault occurs, the faulted part can be substituted directly, and then the data processing unit is utilized to modify a calibration parameter, so that the maintenance time is shorted substantially, and the maintenance cost is reduced.