Art is a mirror reflects the era veining of the current society. The art creation is deducted with science and technology closely in the digital age. A lot of artists not only use the paper and pen but also begin to create with computer graphic tools, such as computer, etc., react their vision of digital generation through art creation. The combination of technology and art gradually out the new favorite of contemporary art-Digital arts (Technology arts、New media arts and Interactive arts…), digital arts used the technological material to creat, but represented some characteristics of technology completely, and the important speciality is interactivity among them. Chapter One delivers the thesis was from interactive concept and media of arts to probe into that the interpretation of art work was gradually from the possession of author open to audience, and because of the 'media', author and audience develop tangible essence interactivity, this kind of interactivity shows on interactive installation arts、computer interactive multimedia arts and interactive network art, interactive multimedia of computer art shows. Chapter two proposes to investigate the languages of interactivity、art work and audiences because of interactivity to create the new aesthetics and relation in art work.