To improve exercise effects of an interval training by allowing each target pulse when doing high intensity exercises and when doing low intensity exercises to be set to appropriate value with respect to a user's exercise ability.

The interval exercise support device 1 for supporting interval exercises for alternately performing high intensity exercises and low intensity exercises comprises: a user information input part 54 for inputting user information to be an index for leading out a user exercise ability; and a target pulse setting part 57 for setting a first target pulse to be a target pulse when doing the high intensity exercises and a second target pulse to be a target pulse when doing the low intensity exercises so as to be value in accordance with the user's exercise ability on the basis of the user information.