As a pair skater, she competed in the 2006 Winter Olympics with partner Jong Yong Hyok, with whom she teamed up in the fall of 2005. They withdrew after the short program at the Olympics. Jong had qualified a spot for the Olympics with his usual partner Sung Mi Hyang. However, Sung was not age-eligible for the Olympics, so he switched partners for the Olympics. Phyo and Jong ended their partnership following the Olympics.
As a single skater, she is the 2008 North Korean bronze medalist.