[1] Moon In-soo was born in June 1945 in Seongju County, North Gyeongsang Province.
He studied Korean literature at Dongguk University but dropped out.
Moon began his literary career in 1985 when he published Neungsubeodeul (능수버들 A Weeping Willow) in Shimsang.
Moon won the 14th Daegu Literary Award in 1996,[2] the 11th Kim Daljin Literary Prize in 2000, the 3rd Nojak Literature Prize in 2003, the 11th Poetry and Poetics Award in 2006, the 17th Pyeon-un Literature Award in 2007, and the 10th Korea Catholic Literature Award for Poetry in 2007, as well as the Midang Literary Award in the same year.
Ra Heeduk has said that Moon In-soo's poetry is "an earnest prayer from the bottom, and a beautiful dedication to the air above."