No amateur results
Professional record| | | 1983 | | Date | Opponent | Place | Result | | + Mar. 13 | Chong-Don Kim | Seoul, South Korea | KO 2 | | + Apr. 3 | Sung-Kyu Kim | Seoul, South Korea | W 6 | | + Apr. 17 | Yong Soo Kim | Seoul, South Korea | KO 3 | | + May 8 | Won Soo Chung | Seoul, South Korea | W 6 | | + May 29 | Hyung Soo Choi | Seoul, South Korea | W 6 | | + June 12 | Byung Dae Yuh | Seoul, South Korea | KO 1 | | + July 10 | Ha-Shik Lim | Seoul, South Korea | W 8 | | + Aug. 14 | Sung Kwan Chun | Seoul, South Korea | W 8 | | + Oct. 23 | Chang-Young Chang | Seoul, South Korea | W 10 | | + Dec. 25 | Ha-Shik Lim | Seoul, South Korea | TKO 7 | | | | 1984 | | Date | Opponent | Place | Result | | + May 13 | Jung-Hyun Kim | Seoul, South Korea | KO 2 | | South Korea Light Flyweight Title | | + July 15 | Kyung Jae Chang | Pohang City, South Korea | W 10 | | South Korea Light Flyweight Title | | - Nov. 16 |  Dodie Boy Penalosa | Quezon City, Philippines | L 15 | | IBF Light Flyweight Title | | | | 1985 | | Date | Opponent | Place | Result | | + Mar. 30 | Kyung Jae Chang | Suwon City, South Korea | W 10 | | | | 1986 | | Date | Opponent | Place | Result | | + Jan. 23 | Young-Il Choi | Seoul, South Korea | W 10 | | + Dec. 7 |  Cho-Woon Park | Busan, South Korea | W 15 | | vacant IBF Light Flyweight Title | | | | 1987 | | Date | Opponent | Place | Result | | + Mar. 29 | Tacy Macalos | Suwon City, South Korea | W 15 | | IBF Light Flyweight Title | | + July 5 |  Toshihiko Matsuda | Seoul, South Korea | TKO 4 | | IBF Light Flyweight Title | | + Aug. 9 |  Azadin Anhar | Jakarta, Indonesia | TKO 3 | | IBF Light Flyweight Title | | | | 1988 | | Date | Opponent | Place | Result | | + Jan. 28 | Rolando Pascua | Seoul, South Korea | W 10 | | - Nov. 4 | Tacy Macalos | Quezon City, Philippines | L 12 | | IBF Light Flyweight Title | | | | 1989 | | Date | Opponent | Place | Result | | + Nov. 12 |  Napa Kiatwanchai | Seoul, South Korea | TKO 12 | | WBC Minimumweight Title | | | | 1990 | | Date | Opponent | Place | Result | | - Feb. 7 | Hideyuki Ohashi | Tokyo, Japan | KO by 9 | | WBC Minimumweight Title |
Summary
Total bouts: 23, Won: 20 (8 inside the limit), Lost: 3 (1 inside the limit), Draw: 0, NC: 0, ND: 0
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