This book is composed of six chapters except for the introduction and conclusion. Inchapter2, the new royal lineage was restored reviewing each family record of the 20 kings from KingSŏndŏk(宣德王) to King Gyeongsun(敬順王) in the latter period of Silla dynasty. Based on this, chapter 3 is about each type of succession to the throne of Silla. Chapter 4 is about the relationship among the senior office - head of the Council of nobles, Sangdaedŭng(上大等), lord chancellor, Sijung(侍中), Minister of the board of military affairs, Pyŏngburyŏng(兵部令) and so on. The treason of usurping the throne is mentioned in chapter 5. Chapter 6 is about extinction of Kolp’um chedo(骨品制度) and the first king who was not person of party royal lineage, Chin’gol(眞骨). Last, in chapater 7, re-establishment of succession to the throne of Silla analized on Goryeo taejo 10hunyo, Hunyo 10cho(訓要十條).