Under the background of globalization, network and digital technology has become a new inevitable trend. With the rapid development of contemporary environmental design practice, people explore a more profound cultural connotation and technological driving force of design values based on the discussion of traditional material objects. In this paper, the concept of environmental space expanded by the arrival of the digital era, the impact of digital image on environmental design practice, the impact of interactive design on environmental design practice, and the impact of virtual reality on sustainable environmental design application are discussed. Cyberspace, as the fifth dimensional space opened up by human beings, has completely broken through the conceptual boundaries of traditional physical space, enriching the concept of environmental design in the field of practice and education a lot. The article concludes that: the rise of digital design allows the electronic information age to integrate art and technology again. When the matrix of the virtual world becomes the protagonist of design in the new era, the new technology in the digital era can bring many new possibilities for environmental design. As a special environment generated by computer, virtual reality makes today??s environmental designers rely more on technology than ever before, and put more energy into and more focus of design on the virtual environment.