From the perspective of Information design science, this thesis discusses the fact that in the transition of the entire society toward informatization, building skins have unprecedentedly picked up more complex functions and borne more social responsibilities, as shown in the following aspects: As the interaction between outdoor advertising media and humans and environment, as the media that link up indoor and outdoor information and as the media for indoor householders to express their needs, the infiltration of being digital into the architectural field has made building skins the interface for human-computer interaction in a broad sense. Accordingly, in addition to professional skills, architectural designers must keep on learning the knowledge and methods of digital interactive design and develop the awareness of studying inhabitants' behaviors. Architectural design has become an integration process of massive information in a way that is different from traditional design ideas. Therefore, designers need to look for more appropriate building skin design methods in this new period of architectural design.