This study examines the background, motivation and purpose of the creation of Hunminjeongeum, which previous research has not poured much attention. The study makes multiple categorization with regard to the motivation and purposes revealed in the preface written by King Sejong. It divides the intention of Hunminjeongeum into two parts: politics-society (p-s) and language-culture(l-c). As for the background fact of p-s, I mentioned the needs of edification and, for the l-c part, I mentioned contradictory relation between the spoken language and the written language through Chinese writing and Idu(吏讀). Motivation and purposes are again divided into a main part and a secondary part. For the main side of p-s factor, I dealt with the efficiency of edification policy and edification purpose. This part also embraces the laws and ordinances regarding agricultural knowledge. And for the l-c factor, I mentioned the problems in the distribution of documents and in the communication with lower classes through Chinese writing and Idu. The secondary part is also divided into p-s and l-c factors. The minor section regarding the motivation and purposes of p-s factor is the disorder of the earlier period of the Joseon dynasty and the justification of the dynasty. For the minor section regarding the motivation and purposes of l-c factor is the confusion of the Chinese pronunciation. Through this classification, this study aims to help to grasp the true meaning and process of the creation of Hunminjeongeum.