When it comes to the musical instrument, an important part in traditional Chinese Intangible Cultural Heritage, the inheritance and promotion still leave much to be desired. As things stand, the inheritance and protection of musical instruments of ethnic minorities are in urgent need of improvement. Hence, in this project, a virtual instrument platform is designed and put in to use, where users can learn to play ethnic musical instruments. This project is expected to develop an APP compatible with both Android & iOS, with illustrations of 3D models of ethnic musical instruments, by using standard HTML5 or AVm. JS technology; Mysql database is created after which access to database through APP pages is possible. This mobile app, centering on ethnic musical instruments-the intangible culture, is developed featuring multi-simulation human-computer interaction and science promotion function, in which users can play virtual musical instruments with mobile phone soft keyboard. Nowadays, the cost of ethnic musical instruments is generally expensive, and some are so exorbitant that a trial in person is not available and not suitable for all. Meanwhile, there are few such display platforms, which makes the aforementioned experience even harder to reach. This project combines musical instruments with the Internet, which virtualizes the operation as if users were playing the real instruments, thus bringing convenience to them. The main purpose is to publicize the ethnic musical instruments and to carry forward ethnic culture.