The Thalamus Effect refers to a psychological state that characters in novels, movies, anime, and other fictional works generally have. In some cases, they are overly addicted to a certain situation or idea, and are unable to extricate themselves, resulting in tragedy or failure. The Don Juan complex is usually manifested as the character often falls into a state of narcissism when facing challenges or difficulties, feeling that he can ignore or despise the problems and difficulties in reality, thus losing the ability and opportunity to solve the problem. This type of complex could cause the character to make wrong decisions or actions that ultimately lead to failure or harm to others. The Don Juan complex often appeared in some fictional works such as the novel Don Juan and Gone with the Wind. It was also widely used in movies, animations, and other fictional works. Although the Don Juan complex is a fictional psychological state, it reflects the general psychological needs and problems of human beings, which is worthy of our in-depth consideration.