Abstract: Deeply influenced by the academics in the Qing Dynasty, Lv Simian inherits the traditional approach of reading classics first and then carrying on independent studies. Among the historical works of the Qing Dynasty, Gu Yanwu’s book Ri Zhi Lu (Record of Daily Knowing) has the most important influence on Lv Simian. Lv inherits well the study style of Gu Yanwu, who draws his conclusions according to numerous historical literatures, combines textual examination and the investigation of the reality, and emphasizes the practical function of historical writings in managing state affairs. In addition, Lv actively adapts to the trend of his time and studies history from the new academic perspective in new theoretical frameworks, which all contributes to his unprecedented achievements in the field of historical studies.