Park began his martial arts career when he saw a demonstration at the Seoul YMCA in 1949. After witnessing that demonstration, he asked his father if he could join the YMCA Kwon Bup Bu under Yoon Byung In. His father approved, and Park spent six months training under Yoon before the Korean War broke out. Prior to training in the martial arts, Park was active as a gymnast.
During the Korean War, Park was assigned to the ROK Army Signal Corps. After the Korean War, Park studied under Uhm and eventually was promoted to 1st Dan in 1954. He first began teaching at Seoul National University in 1955 before becoming the Chief Taekwondo Instructor for the Presidential Protective Forces at the Bluehouse in 1962. Park taught at the Bluehouse for eighteen years.
Park is the Vice President of the World Chung Do Kwan Association. Currently, although Park has retired, he now travels all over the world updating Taekwondo standards. Pak Hae Man has many notable students amongst them (Frank Massar) of Massar Taekwondo and (Sheamus O'Neill) of World Taekwondo Association.