A log consolidation device includes: a selection unit that selects at least part of fields included in multiple logs stored in a storage unit and chronologically representing processes executed by one or multiple processing units, each log including information representing content of a process and a count value relating to the process, the information being divided into multiple fields; a deletion unit that deletes, from at least part of the multiple logs stored in the storage unit, items of information in the fields selected by the selection unit; and an integration unit that integrates into a single log two or more of the multiple logs having identical items of information in fields that were not deleted by the deletion unit by summing up the count values of the two or more of the multiple logs.