Keith Haring is the American graffiti art representative in the 1980s . He created a flattened graffiti style by using the rough black lines to outline the simple graphics and endowed these lines and graphics with visual power. He used the flamboyant contrast color to describe the level of graphics and expressed the spirit inside. He chose to paint in flattened graffiti style, which is contrast to the traditional perspective way of painting and used abstract graphics to represent a variety of themes and express himself. Keith Haring，s art work expressed itself in an extraordinary, niche style, however got spread in public, which realized the ideal of art popularization.