An alert analyzing apparatus includes: a storage unit that stores a first value and a preset second value in association with time-of-day information, the first value fluctuating as time elapses; an alert output unit that outputs an alert and time-of-day information in a case in which the first value diverges from the second value in a certain time of day; a comment accepting unit that accepts an input of a comment on the alert thus output, and stores the comment in association with the time-of-day information; and a classification unit that classifies a plurality of time zones into any one of predetermined segments, and stores the comment associated with the time zone thus classified, in association with each of the segments, based on a fluctuation phase of the first value.