The information acquired by hearing plays a key role in children's perception of the world. Hearing difficulties caused by various reasons damage the language function of hearing-impaired children, making them prone to inferiority and other character defects. This project chooses to combine MIDI keyboard device and Leap Motion gesture recognition device with Unity3D development engine for design and production. Unity3D applied Audio Source, Animation, particle system, UI system, VFX Graph and other modules to build the project framework. Enable hearing impaired children to perceive sound and enhance their confidence and understanding.