As the title of the book suggests, the book mentions each Emperor's posthumous name or the name bestowed after death which is followed by a brief biography, and the incidents that took place during his reign were written briefly in chronological order, and moreover there are categories of abdicated Emperor, Crown Prince, consorts of Emperor, the high priestess of Ise, Sekkan (Regent and Chancellor), Otodo (Minister), Dainagon (chief councilor of state), Sangi (Councillor), Kuroudono kami, Prince and Princess, in which the name of the person in question is mentioned.
内容は書名のとおり、各天皇ごとに諡号あるいは追号を掲げて、略歴や在位中の出来事の摘要を編年体で記し、さらに太上天皇・皇太子・後宮・斎宮・摂関・大臣・大納言・参議・蔵人頭・皇子女などの各項を設けて、該当者の人名を記している。