The Imperial lineage is central to the "Teiki" (records of the Emperor's family tree) part, and it describes the names of emperors from the first to the thirty third generation, the names of the empress, prince, and princess, and the clan of descendants of the emperor as well as the name of imperial residence, reign duration, the Oriental zodiac of the year of death, life duration, locations of imperial mausoleums, and major incidents during the reign of emperor.
天皇系譜が『帝紀』的部分の中心をなし、初代天皇から第33代天皇までの名、天皇の后妃・皇子・皇女の名、およびその子孫の氏族など、このほか皇居の名・治世年数・崩年干支・寿命・陵墓所在地、およびその治世の大事な出来事などについて記している。