The paper compares Zhu Xi and Freud's correlative theory elementarily from the visual angle of uncon- sciousness in the sense of philo-psychology,deems that under the analogy of superficial shape of these theories,there are profound differences based on different cultural spirits:one is rational and of moral principles,the other is unrational and pathological;one is a representation of the original ethical spirits and the other manifests the pessimistic western cultural spirits of twentith century.