A device includes: a controller (722) that converts a pressure value detected by a pressure detector (5) into visual or aural lingual pressure information changed depending on a magnitude of the pressure value； and an information output unit, such as a buzzer (73) and a color display LED (37), that outputs the lingual pressure information in response to a signal from the controller (722). The information output unit outputs lingual pressure information different depending on a pressing force applied on an elastic balloon by a tongue, allowing users such as patients and elderly people to continue a training without being bored.
