Lee Jae-Uk is the first Korean folksongs-majored student in official administrative system. He was the third graduate of Keijo Imperial University studying Chosun linguistics major, law department. He wrote by using scientific survey method during National folksongs Survey held by law department of Keijo Imperial University in 1929. Thanks to this book, Yeongnam folksongs and Arirang, the representatives of 1920s when the ethnic antiquities were mostly reserved, could be studied. Its title and chorus varied as ‘Arrang,’ ‘Ururung,’ ‘Urirang,’ ‘Arangrung,’ etc., which indicates that it was not unified to ‘Arirang’ yet in 1930. Jeongsunjin Arangrung added in 1930 revealed the specific place name 'Jeongsun' in the title of song. Also, Munkyeongsaejae Arirang showed that it was sung during rice farming in Munkyeong area. It is very meaningful not only in studying the state of Yeongnam area Arirang but also the entire contemporary Arirang. This paper attempted to confirm an academic reputation of Yeongnam area Arirang in depth. In the process, it was found that Munkyeongsaejae Arirang affected directly to Ararung written on sheet music by Hulbert in 1896, the first sheet music of Arirang, and consequently influenced to JIndo Arirang as well. The fact confirms that Munkyeongsaejae Arirang was the start of modern Arirangs. Particularly, this study was focused on highlighting its value through the composition time, background and relations with other Arirangs at that time. This research aims to investigate effect of Munkyeongsaejae Arirang which is starting-point of morden Arirang on history of Arirang approaching academically the meaning and reputation of Munkyeongsaejae Arirang in folksongs history through .