As an auxiliary teaching material for primary school students, the electronic pinyin audio wall chart is a good teacher to help children learn Chinese pinyin. Recorded by a senior TV announcer, the pronunciation is accurate and the sound quality is sweet, which is a guarantee for children to learn Mandarin well. It has multiple functions including music, teaching and testing, allowing parents to save effort and worry, and achieve remarkable learning results. It can promote the development of children's language learning ability and make the learning content and process more interesting. Use a new generation of microcomputer language chips to develop children's intelligence, increase their interest in learning, and enhance their hands-on ability and creativity. With both sound and pictures, it combines learning with entertainment and is rich in content.