所谓渤海国的纪年问题，实际上就是渤海的15位王在公元698年至926年这228年内各自纪年的起止问题。这就直接涉及到渤海自高王大柞荣以下诸嗣王的即位改元问题。关于渤海诸嗣王的即位改元问题，学术界主要有两说：一为即位当年改元说；一为即位翌年改元说。撰于朝鲜正宗时（1777 The so-called anniversary issue of the so-called Bohai Sea is actually the question of the starting and ending dates of the respective anniversaries of the 15 Kingdoms of the Bohai Sea during the 228 years from 698 BC to 926 AD. This is directly related to the immediate reorganization of the sovereignty of the heirs under the high royal princes of the Bohai Sea. As for the issue of the reorganization of the sons of the Bohai Sea ascended the throne, there are two main theories in the academic circle: one is the reorganization of the Yuan Dynasty at that time; the other is the reorganization of the reign of the following year. Written in North Korea when authentic (1777