Gunseopyogi is a very important bibliography from the Joseon Dynasty. It was printed as a part of Hongjaecheonseo as a Cheongli-type print. Up to now, Gunseopyogi has been recognized as a work by King Cheongjo. However, if we want to determine its real author, Seo Yeongsu is the key person. Through his writing, we know that the draft of Gunseopyogi came into existence earlier than previously considered. First, Seo Yeongsu laid the foundation and made a draft in 1797. Then, Seo Hosu continued the work in 1798. Finally, after Seo Hosu passed away in 1799, Seo Yeongbo and Shim Sanggyu took charge and completed the work. Based on their characteristics, the existing editions can be divided into two systems. The six-volume editions, which have already been talked about, including the Eojeosajib edition,Shinyu edition, and Gabsul edition, all correspond to Seo Yeongbo and Shim Sanggyu. Luckily, a four-volume edition was found at the Tokyo Metropolitan Central Library in Japan. Gunseopyogi was originally divided into four parts, including classics, history, philosophy, and literature. But now, Gunseopyogi has shown up with two parts: the works of the king and the works under command of the king. Korean scholars used to posit that there is also a five-volume edition of Gunseopyogi, but that may be incorrect. The second volume of the Eojeosajib edition is different from the other five volumes. Its catalogue page is missing and the first line is blank. If we just count the titles, the Eojeosajib edition seems to have only five volumes.