This is a study of Park, U-Seop`s works who was a radio-drama writer in 1930s. He was a grandson of Forth leader of Chondogyo, and was a son of a fighter for national independence. So he watched various art performance at Chondogyo church or Chondogyo memorial hall. And he developed his artistic knowledge from those. Especially he received a Bang, Jeong-Hwan`s guidance who was a pioneer of children movement. He joined the broadcast as a radio actor first time, and he was active soon as a radio-drama writer. He wrote various radio-drama, drama of children`s song, radio trip, and children`s novel, etc, because tried to broad internal function of radio-drama. Park, U-Seop`s works awakened the pride of Korean history, folklore and custom to children who lived at the Japanese colonial period. Therefore he instill confidence into their mind. His works gave the dream and hope to future children, and instill right character to them. He was a successor of children movement which practiced the pioneer of children movement, Bang, Jeong-Hwan`s spirit