The purpose of this paper is to make an alternative idea about the order of an entry in so-called One-Korean Dictionary. For this purpose, I show the differences between the order of an entry in dictionary compiling and the order of a Hangul letters in Hangul orthography system. Then I analyse the oredr of an entry in the Pyojune dictionary(「표준국어대사전」) and the order of an entry in the Chosun dictionary (「조선말대사전」), and compare the one with the other. Finally, I propose a new order of an entry for so-called One-Korean Dictionary, it is as follows. ①an initial of a Korean orthographic syllable ㄱ ㄲ ㄴ ㄷ ㄸ ㄹ ㅁ ㅂ ㅃ ㅅ ㅆ ㅇ ㅈ ㅉ ㅊ ㅋ ㅌ ㅍ ㅎ ②a medial of a Korean orthographic syllable ㅏ ㅐ ㅑ ㅒ ㅓ ㅔ ㅕㅖ ㅗ ㅘ ㅙ ㅚ ㅛ ㅜ ㅝ ㅞ ㅟ ㅠ ㅡ ㅢ ㅣ ③a final of a Korean orthographic syllable ㄹ ㄲ ㄳ ㄴ ㄵ ㄶ ㄷ ㄹ ㄺ ㄻ ㄼ ㄽ ㄿ ㅀ ㅁ ㅂ ㅄ ㅅ ㅆ ㅇ ㅈ ㅊ ㅋ ㅌ ㅍ ㅎ I propose that 24 Hangul letters in Hangul orthography system should be revised to 40 Hangul letters.