The emergence and development of computer technology and other advanced technologies have promoted the rapid development of society, and promoted the arrival of the new media era. This has gradually changed the traditional way of transmission and the scope of transmission. Besides, green design is also gradually affecting and changing people's living environment and lifestyle. The diversified green medium has attracted the attention of many audiences and exerted a great influence on the development of traditional medium. According to the above situation, in the new media era, the development of the field of art design is facing the need of innovation. There are two main problems in using traditional medium for design. One is that audiences gradually become numb or even bored for traditional medium. The other is that designers need to choose environment-friendly medium to carry out design work under the condition of increasing public awareness of environmental protection. Therefore, the green transformation of medium is an important issue to be faced by current design, as the same time, light medium is an essential medium element in design work. To sum up, this essay will discuss how to use new light medium for green design in the new media era, and the new light medium mentioned here is mainly the medium formed by bioluminescence.