Family has always been a symbol that many films and TV shows cannot escape. As the most outstanding Chinese director in the world today, Ang Lee's works are always approachable, containing a strong cultural flavor, also good at revealing the beauty of human nature. The Family Trilogy, the most famous work of Ang Lee, reflects his ingenious plot design and his unique understanding of Eastern and Western cultures. This paper interprets Ang Lee's Family Trilogy from the perspective of psychoanalysis, and studies them from the aspects of plots, symbols and metaphors, based on the basic viewpoints of id, ego and superego.