He entered Haeju Sports College in Juche 71 (1982) to learn weightlifting for the first time and graduated from Korea University of Physical Education. He has worked as a weightlifting coach in the Amnokgang Sports Team from 1995.

He has introduced new training methods suited to constitutional characteristics of players and the development trend of world weightlifting.

In the course, he trained several famous weightlifters including Om Yun Chol, who took the first place at five World Weightlifting Championships and the 30th Olympic Games and proved successful at many other international games, thus bagging 24 gold medals, two silver medals and one bronze medal.

For his meritorious service, Ro was awarded the title of DPRK Labor Hero in 2019 and was selected as one of the ten best coaches that year.