A low-frequency treatment device with minimal hindrance to a user's action. The low-frequency treatment device comprises a pad that executes low frequency treatment by applying a low frequency current to a body of a user; and an execution unit that detects vibration of a location where the low frequency current is being applied (step S2) and that, when the vibration is detected, executes prevention processing for preventing the vibration of the location where the low frequency current is being applied; wherein the prevention processing comprises processing for notifying about changing the location where the low frequency current is being applied, for example (step S10).