This paper discusses avant-garde net art work within the framework of the Constellation theory of Adorno. The first section examines and clarifies the communicative and mimetic language of net.art to establish this avant-garde networks' heterogeneous terminology. The heterogeneous terminology is abstracted from the essence of cyber subculture, net technology, Adorno's aesthetic theory, and molecular biology. In addition, the heterogeneous terminology constructs the genealogy of the avant-garde net.art movement. The second section criticizes avant-garde net art work via the concept of heterogeneous terminology in terms of this genealogy. The genealogy which reflects the aesthetic vision of avant-garde net art is then analyzed, including how the heterogeneous language and genealogy engaged in this analysis have become an aesthetic language. It is concluded that the similar but not entirely identical forms of net.art can be drawn from constellation aesthetic thinking to formulate an aesthetic language of avant-garde net art. Additionally, in formulating a constellation aesthetic of avant-garde net art linked to genealogy, an ideology of anti-identity is elaborated.