Abstract: The thought of evil nature includes the theory of evil nature that explicitly asserts human nature is evil and the perception of evil nature that does not explicitly asserts that human nature is evil, but it has some understanding and insight into the evil of human nature. Confucius’theory of human nature contains various factors, such as the theory of no good human nature and no evil human nature, the theory of good human nature, the theory of somebody is good human nature and somebody is evil human nature, the theory of evil human nature, and the theory of mixture of good human nature and evil nature. In this way, Confucius’thought is possibly a thought of evil human nature on the thought logica. From the text, Confucius had rich demonstrations on the darkness of human nature, the defects of human nature, the tendency of human degradation, and the difficulty of becoming virtuous. Confucius’ thought of evil nature offers a new approach to understand Confucianism, which is conducive to explore the contemporary value of Confucianism.