An optical fiber temperature distribution measurement device for measuring a temperature distribution along a longitudinal direction of an optical fiber, the device comprising: a light transmitter (10, 11) configured to input a train of code-modulated light pulses into the optical fiber; a light receiver configured to receive Raman back scattering lights generated by inputting the train of code-modulated light pulses into the optical fiber; a photoelectric converter (15a, 15b) configured to photoelectrically convert the Raman back scattering lights into photoelectric conversion signals; an A/D converter (17a, 17b) configured to convert the photoelectric conversion signals into digital signals; a demodulator configured to perform a correlation processing between the digital signals and a code string associated with a type of the code modulation performed by the light transmitter (10, 11), and to demodulate the digital signals; a storage storing correction data to be used to correct a deviation of the digital signals output from the A/D converter (17a, 17b) or a deviation of the demodulated signals output from the demodulator, the correction data being associated with predetermined temperatures; a corrector configured to perform a correction to the digital signals output from the A/D converter (17a, 17b) or to perform a correction to the demodulated signals output from the demodulator, using the correction data stored in the storage; and a temperature sensor configured to measure a temperature inside of the optical fiber temperature distribution measurement device, wherein the corrector is configured to read out from the storage the correction data associated with the temperature measured by the temperature sensor and to perform the correction. a light transmitter (10, 11) configured to input a train of code-modulated light pulses into the optical fiber; a light receiver configured to receive Raman back scattering lights generated by inputting the train of code-modulated light pulses into the optical fiber; a photoelectric converter (15a, 15b) configured to photoelectrically convert the Raman back scattering lights into photoelectric conversion signals; an A/D converter (17a, 17b) configured to convert the photoelectric conversion signals into digital signals; a demodulator configured to perform a correlation processing between the digital signals and a code string associated with a type of the code modulation performed by the light transmitter (10, 11), and to demodulate the digital signals; a storage storing correction data to be used to correct a deviation of the digital signals output from the A/D converter (17a, 17b) or a deviation of the demodulated signals output from the demodulator, the correction data being associated with predetermined temperatures; a corrector configured to perform a correction to the digital signals output from the A/D converter (17a, 17b) or to perform a correction to the demodulated signals output from the demodulator, using the correction data stored in the storage; and a temperature sensor configured to measure a temperature inside of the optical fiber temperature distribution measurement device, wherein the corrector is configured to read out from the storage the correction data associated with the temperature measured by the temperature sensor and to perform the correction.