The audio wall chart is developed on the basis of the ordinary silent wall chart. On the basis of the original, audio components and printed lines are added to realize the audio of the silent wall chart, and children can realize synchronous cognition by touching the audio position of the pattern. Audio wall charts are usually divided into monolingual, bilingual, multilingual, single-sided, double-sided, concave-convex and flat; There are also crystal discs and ordinary versions on the market;