An analyzing apparatus 1, such as a fluorescence X-ray analyzer, being able to analyze samples automatically, by transferring the samples into an analysis chamber, sequentially, comprising: an interruption recover device 11 for automatically turning on an electric power supply for the analyzing apparatus, when electricity is re-established after interruption thereof; and a data processing computer 2, being connected through the uninterruptible power source 3 to an electric power source, wherein, the data processing computer 2 includes function for temporality memorizing analysis information of the automatic analyzing apparatus when the interruption of electricity occurs, and function for supplying electricity to the analyzing apparatus 1 through the interruption recover device 11 and also for re-starting the analysis of the samples upon the basis of the memorized analysis information at the time when the interruption occurs, when the electricity is recovered, thereby being suitable for unmanned operation thereof.