The great scholar in the Late Ming Dynasty, Gu Yan-Wu, who suffered from being conquered by the different tribe, was devoted to the art of leading a country in order to restore Ming Dynasty. The new paragon of academic researches was inspired by Gu Yan-Wu, therefore he was praised as 'the ancestor of the Confucianists in Ching Dynasty'. Gu Yan-Wu's representative work is Ri-Zhi-Lu, a book based on his reading notes recorded through his whole life, and is the important access to seize the academic achievements of Gu Yan-Wu. In Gu Yan-Wu's opinion, the best way to lead a country is put the principles of the Confucian canon into practice, and scrutinize the experiences in history. In Ri-Zhi-Lu, Gu YanWu identified the principles of the Confucian canon with plenty of historical events mostly from Zuo-Zhuan which is not only historical records but also an important Confucian canon. Therefore, this study induces Gu Yan-Wu's argumentations about Zuo-Zhuan in Ri-Zhi-Lu to grasp the tragedies in his scholarly researches, and how he orientated Zuo-Zhuan. In stead of being particular about trifles in the explanations of words and just following conventions which regard Zuo-Zhuan as just an commentary on Chun-Qiu, Gu Yan-Wu attempted to find the 'medicine' for the troubled time from the Ancient documents, especially the Confucian canon. Due to the hurt being subjugated people, he couldn't help himself to focus his argumentations on the cultural boundary between Hua-Xia and 'barbarian tribes', one of the important theories of Confucius, and promotion the importance of ceremonies. These were what he thought the very foremost things to know about Zuo-Zhuan.