Volumes 1–3 contain the annals of the Liu Song emperors beginning with Emperor Wu. Volumes 4–5 contain the annals of the Southern Qi emperors, volumes 6–8 contain the annals of the Liang emperors, and volumes 9–10 contain the annals of the Chen emperors. Volumes 11–12 contain the biographies of empresses and consorts. Volumes 13-69 contain biographies of figures from the Liu Song (13–40), Southern Qi (41–50), Liang (51–64), and Chen (65–69) dynasties. Volumes 70 through 80 contain other biographical content, including virtuous officials (70), Confucian scholars (71), literature (72), filial acts (73–74), recluses (75–76), favorites of nobles (77), foreign peoples (78–79), and treacherous officials (70).
Li Yanshou worked as a historical records assistant (直國史) and also as a compiler of historical records (修國史) in the Tang court. During that time he reorganized and supplemented his father's writings. He drew from other standard histories of the individual dynasties and from miscellaneous histories (雜史). With review by Linghu Defen Li Yanshou presented his work to the emperor in 659. 
Strange, Mark; Hruby, Jakub (2015). "Nan shi 南史". In Dien, Albert E.; Chennault, Cynthia Louise; Knapp, Keith Nathaniel; Berkowitz, Alan J. (eds.). Early Medieval Chinese Texts: A Bibliographical Guide. Berkeley, CA: Institute of East Asian Studies, University of California. pp. 209–216.CS1 maint: ref=harv (link)
Wu, Huaiqi; Zhen, Chi (2018). An Historical Sketch of Chinese Historiography (e-book). Berlin: Springer.CS1 maint: ref=harv (link)