The original author of the biography of Yue Fei in the Song Dynasty was Yue Ke, the grandson of Yue Fei. Because this book was recorded as the official history book of the Southern Song Dynasty, Yue Fei was a famous general and anti-Jin hero in the Southern Song Dynasty. His historical status and influence were very important. Therefore, the author of the biography of Yue Fei in the Song Dynasty had to accurately record and evaluate his life and achievements. At the same time, as Yue Fei's grandson, Yue Ke had a deeper understanding of the family's history and cultural background. He could better understand the history and traditions of Yue Fei's family and integrate them into the compilation of the Biography of Yue Fei. In addition, because the historical and cultural background of the Southern Song Dynasty was different from that of later generations, the biography of Yue Fei, a historian of the Song Dynasty, could better reflect the historical characteristics and character style of that era, and also provide important historical information for later generations. To sum up, the original author of the biography of Yue Fei in the Song Dynasty was Yue Fei's grandson, Yue Ke. It can accurately record and evaluate Yue Fei's historical status and achievements, and at the same time, it can better reflect the historical characteristics and character style of that era. It is a very important historical document.