A stress management system comprises: a first sensor that detects biological data of a user a second sensor that detects life log data indicating an action history of the user a generator that generates stress data using the biological data, the stress data indicating a time series variation of a stress level of the user an estimator that, when the stress level of the user included in the stress data exceeds a first threshold, estimates whether or not stress of the user is interpersonal stress caused by contact with another person, using the life log data and a notifier that notifies the user of a result of the estimation by the estimator and notifies a notification target person different from the user of notification content based on the result of the estimation by the estimator.
