a centrifugal machine comprises a rotor drivable and rotatable by a motor while holding a specimen , and including a recording medium for recording data therein ; a peltier element , when a voltage is applied thereto , for controlling the temperature of the rotor ; a recording head disposed at a position adjacent to the rotor for reproducing data from the recording medium or for recording data into the recording medium ; and , a control device not only for controlling the operation of the peltier element when the peltier element controls the temperature of the rotor but also for controlling the operation of the recording head when the recording head reproduces the data from the recording medium or records the data into the recording medium , wherein the control device , when carrying out the data reproduction or data recording with respect to the recording medium provided in the rotor , controls the peltier element in such a manner that the operation of the peltier element is caused to stop .