The earliest existing record of Wu Zixu was seen in ”Zuo Zhuan”. The biography of Wu Zixu can also be found in ”Historical Record”. Wu Zixu experienced a lot of ups and downs in his unique life. Whenever he fell into difficulties, he was always able to turn bad luck into good fortune. However, though held a high position, Wu Zixu ended his life by hanging himself. Especially, his leaving for Wu State and helping Wu State to destroy Chu State received different historic evaluations. In this article, the author tried to discuss the character image of Wu Zixu from different aspects of ”Zuo Zhuan” and ”Historical Records”.