Mentioning the Hangeul songs is to call songs for celebrating or commemorating Hangeul. Today, one of the most famous Hangeul songs is ‘Song of Hangeul Day’(한글날 노래). This study is to research the history of how this song was settled among the public. The results are as follows: (1) There were various Hangeul songs before Korea's independence from Imperialist Japan; most eminently ‘Song of the Letters' Day’(글 날 노래), where the lyrics were written by Illo(일로). (2) The first Hangeul song written right after the independence was ‘Hangeul Song’(한글 노래) where Lee Geukro(이극로) wrote the lyrics and Chae Dongseon(채동선) composed the music. It was a song designated as an official ceremony song, from 1946 Hangeul Day anniversary. (3) As Lee Geukro crossed over into North Korea and Korean War was broken out, his ‘Hangeul Song’ was avoided in South Korea. That was the time when Choe Hyeonbae(최현배) made ‘Song of Hangeul’(한글의 노래) as an alternative. (4) Although there exist historical records that ‘Song of Hangeul’ where the words were written by Choe Hyeonbae and the music was composed by La Unyeong(나운영) was sung from 1951 to 1953, some curiosity is not solved about the facts. (5) By 1954, it became popular to sing ‘Song of Hangeul’ of Choe Hyeonbae's words and Park Taehyeon(박태현)'s music. This song was adopted in the 1st textbook designation(Feb. 1959) as the title of ‘Hangeul Song’(한글 노래) and also adopted in the 4th textbook designation(Mar. 1983) as the title of ‘Song of Hangeul Day’(한글날 노래). For this reason, the song became popular among today's general public. (6) Meanwhile, Lee Byeonggi(이병기) wrote the lyrics and La Unyeong composed the music of ‘Hangeul Proclamation 500th Anniversary Song’(한글 반포 오백년 기념가) in 1946 when it is the 500th year since proclamation of the alphabet.