<Parasite> was a Korean film that received worldwide attention, and it was a work that showed considerable success as a box office. Recently, researchers at home and abroad have expressed explosive interest in this <Parasite>, and are actively conducting research on this <Parasite>. The research related to <Parasite> thus calculated takes the spatial background of the work as an important observation point, and concludes that this film is a work that reveals the structural problems of Korean society. However, in order for this work to reach a more precise interpretation of human society, it is necessary to pay attention to the natural ecological (scientific) observation accepted in the work. <Parasite> is a work that closely examines the relationship between parasites and hosts in natural ecosystems, and reflects the results of examining the similarity before describing the characteristics of human society. Therefore, in order to obtain the results of in-depth research on <Parasite>, it is necessary to examine the similarity between the ecological conditions and the method of parasitism, the principle of the ecosystem maintained based on this, and the human social environment.