This article talks about unconscious domination (Id) in the life of principal character in the novel Thérèse Raquin by Émile Zola, naturalist French writer. The method used in this research is qualitative method using structural theory and structural personality by Sigmund Freud. The result shows that there’s character development that utilize unconscious domination in Thérèse Raquin’s life. Thérèse’s unconscious domination had started since he met Laurent, motivated by her unequal ego since her childhood and Laurent’ influence that’s also controlled by Id since his school time.