]It has been said that the later Mito school(Kokimitogakuha) took great role in compiling the 'Dainihonshi' by issuing the 'Three great argument(Sandaigiron)' in Kansei period(1789∼1801), which resulted in the drastic change of the leadership of the Shokokan, or history compiling organization of Mito Prefecture. However, I think that the Fujita faction, the politically radical group of the later Mito school, didn't take any roles in projecting the compiling business.In Kansei period, the leaders of the Shokokan had been preparing the publication of the important parts(Kiden, 紀傳) of the 'Dainihonshi' for commemorating the 100th anniversary of Tokugawa Mitukuni's death, who started this compiling business. But the younger historians leaded by Fujita Yukoku put firm opposition against the publication, insisting 'Three great argument(Sandaigiron)'. These are as follow; first, the title of 'Dainihonshi' was not proper and should be corrected, second the history compilement should not be published without 'sihyo(志表)', so the publication must be put off until sihyo's completion. third the comments(ronsan, 論贊) attached below each chapters should be deleted because they contained the disrespect to the Tenno.These harsh attacks on the leaders of the Shokokan brought about the leadership's drastic change, and so the Fujita faction became to seize power of Shokokan. The time had come when they realized their ardent of compiling business. But, they had been very neglected in such business, and they were much more eager for political struggles and taking offices in government.In sum, the Fujita faction didn't contribute to completing the 'Dainihonshi', and they were some academic persons such as Toyota Tenko who put the business forward and finished. (Kookmin University/ticotahiti@hanmail.net)