Born in Yecheon, South Korea, Park Seo-Bo studied at Hongik University in Seoul. He emerged as a significant voice in the post-war Korean art scene, initially gaining recognition for his involvement in the Art Informel movement, which introduced abstract expressionist tendencies to the region.

His signature Écriture series, which he began in the late 1960s, involves the rhythmic, repetitive application of pencil or paint onto canvas. These works are characterized by their meditative quality and focus on the physical process of mark-making, positioning him as a central architect of the Dansaekhwa movement.

Park remained a prolific artist throughout his career, with his work featured in major international exhibitions and institutional collections worldwide. His practice is widely recognized for its rigorous formal discipline and its role in defining the aesthetic trajectory of contemporary Korean abstraction.