Under the background of rapid development of real estate market in China, decorative art in architecture becomes more important, and more and more buyers pay more attention to the room style and decorative art design, so how to make the interior decoration design of inheritance and innovation become important problem in building decoration. This paper studied on the decorative art in architecture, an important role, design principles and characteristics of decorative art in architecture, and how to finish innovation on this aspect. In China, economic development has led to the prosperity of the real estate industry which indirectly led to the development of the construction industry and innovation, and people's living standard and aesthetic standards led to the prosperity of the interior design profession. Because interior decoration design inspiration must come from social practice, so how to innovate the cultural development of architectural decorative art is necessary to ensure the success of the art according to our country's unique social and historical. The connotation and important function of architectural decoration art are introduced in the followings.
