The Book of Qi (Qí Shū) or Book of Southern Qi (Nán Qí Shū) is a history of the Southern Qi dynasty covering the period from 479 to 502. It is one of the Twenty-Four Histories of Chinese history and was written by Xiao Zixian during the succeeding Liang Dynasty. Xiao Zixian was a grandson of Emperor Gao, the founder of Southern Qi, making this book the only one of the Twenty-Four Histories authored by a member of the chronicled dynasty's ruling house.
When first submitted to Emperor Wu of Liang, the book was known as the Book of Qi. After the Book of Northern Qi was written, it became known as the Book of Southern Qi to distinguish between the two. The original work contained 60 volumes, but one preface has since been lost.
Taiwan