A mural is a kind of painting to decorate walls and ceiling, and it is one of the earliest painting forms in human history; hominids portrayed a variety of graphics on the wall. Because the primitive mural was discovered in a France cave, murals are also known as cave painting. Mural has gradually devoloped into a kind of architectural and interior decoration, and CaiZhuan is also a kind of mural. With the diversification and personalization of modern society, more "self-expression" is used as the center of the art form. In order to meet the social development needs, modern murals and  architecture environmental art appear in a variety of art forms, creating a diverse cultural environment.