He continued to write and debuted as a poet when the journal World Literature published his poem Eodueun naljjareul seucheoseo (어두운 날짜를 스쳐서 Brushing Past the Dark Days) in 1986.
[4] He published his first poetry collection Eoreum sijip (얼음시집 Ice Poetry Collection) in 1988, followed by Pureunbitgwa ssauda (푸른빛과 싸우다 Fighting Blue Light) in 1994, Geuga nae ulgureul manjine (그가 내 얼굴을 만지네 He's Touching My Face) in 1997, Gieokdeul (기억들 Memories) in 2001, Jinheukeolgul (진흙얼굴 Mud Face) in 2005, Naeganchereul eotda (내간체를 얻다 I've Acquired the Language of Women) in 2011, Naljjadeul (날짜들 Dates) in 2013, and Geomeunsaek (검은색 Black) in 2015.
[6] Eoreum sijip (얼음시집 Ice Poetry Collection) describes the anguish of worldly relationships and the process of overcoming it.
Following his third poetry collection Geuga nae ulgureul manjine (그가 내 얼굴을 만지네 He's Touching My Face), which offers a unique interpretation of color and a sympathetic portrayal of everyday life, Song begins to use more compact language to express his thoughts and intuitions.
"[9] In addition, literary critic Lee Gwang-ho observes that Song's poetry brings together bodily senses with the beauty of landscapes, describing him as "a poet who finds passages of the body in images.