Human beings are surrounded by languages and images. Diverse media are being created with development of scientific technology, and we are forced to interpret complex texts, sounds and images through such media. These texts influence our thoughts and behavior. Entrance to the era of multimedia emphasized importance of video contents like films and animations. Animation can become a mirror image to audiences and children who are staying in the Imaginary jump back and forth from the Imaginary and the Symbolic through animations. Therefore, this study aims to accomplish the following on by Hayao Miyazaki: First, to examine how ecological consciousness is expressed, second, to examine how Lacan\'s psychoanalytic theory is revealed, and lastly to find the contact point of Lacan\'s psychoanalytic theory and ecological discussion. DVD (100 minutes) of released in 2008 was selected as the target of this study. The film was classified into 24 scenes according to the story line. The story of is largely divided into encounter of Ponyo and Sosuke, their separation and reunion. The film shows the process in which an endangered ecosystem brings back its balance. Nature and Subject formation of children is revealed through the efforts by Ponyo and Sosuke for their love and reunion. Unlike other works directed by Miyazaki, shows a happy ending where the nature and human beings come to harmony without any sacrifice by a specific character. He reveals the nature of children and expands his ecological discussion by harmonizing the twisted world. As such, animations can become excellent education media that deliver ecological discussion. Lacan\'s theory can be used as an important resource for understanding the nature of children. Key Words: Ponyo on the Cliff, animation, Jaques Lacan