An analyzing device requires regular maintenance for maintaining a predetermined analyzing performance thereof. However, the more complex the analyzing device becomes, the more number of maintenance items are provided. For example, if a plurality of types of maintenances to be performed by removing same component, efficiency may be improved by performing the same as a whole. However, when conforming with a manual, if recommended timings to perform the maintenance are shifted delicately, there is a probability of occurrence of a case where the same components are removed several times for maintenance during a short time. At the time when an instruction to perform maintenance is issued, maintenance items to be performed are extracted, the extracted maintenance items are sorted into a recommended performance order in conformity to a preset rule such that the similar maintenance or the maintenance of the same portion or the like are performed continuously.
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