It can be used to exercise the flexibility of the tongue, and is suitable for language barriers such as slurred speech, stiff tongue, and incomplete pronunciation. Targeted training of tongue muscle strength, tongue flexibility and stability. Improve tongue muscle strength and tongue coordination. It is a professional tool for the trainer, enabling the trainer to independently master the flexibility and stability of the tongue. There are two ways of use, up and down exercise training and left and right alternate exercise training, you can choose according to your own situation. Mainly to solve the language development problems of children and the elderly, such as children's unclear pronunciation, and the elderly who cannot speak clearly.