No amateur results
 
Professional record|   |  | 1981 |  | Date | Opponent | Place | Result |  | + May 8 | Kyu Sang Choi | Seoul, South Korea | W 4 |  | - May 10 | Young Kil Choi | Seoul, South Korea | L 4 |  | = June 7 | Yang-Il Shin | Daejeon, South Korea | Draw 4 |  | = June 27 | Chang Sung Choi | Busan, South Korea | Draw 4 |  | + Sept. 22 | Byong Hyun Choi | Seoul, South Korea | KO 1 |  |   |  | 1982 |  | Date | Opponent | Place | Result |  | + Feb. 14 | Kyung Woo Park | Daejeon, South Korea | W 4 |  | + Apr. 17 | Kwang Soo Kim | Ryoisan, South Korea | KO 4 |  | + May 8 | Kyung Woo Park | Seoul, South Korea | W 4 |  | + June 26 | Kwan Sik Choi | Seoul, South Korea | W 6 |  | = Sept. 18 | Mun Kyun Joo | Chongju, South Korea | Draw 8 |  | + Oct. 31 | Yu-Ok Joo | Seoul, South Korea | W 8 |  |   |  | 1983 |  | Date | Opponent | Place | Result |  | + Feb. 5 | Young-Chul Hong | Daejeon, South Korea | W 8 |  | + Mar. 12 | Jung Kuk Lee | Masan City, South Korea | W 8 |  | + May 14 | Young Kil Choi | Seoul, South Korea | W 8 |  | + June 26 |   Hi-Young Chung | Seoul, South Korea | KO 4 |  | South Korean Super Flyweight Title |  | + Aug. 27 | Young Kil Choi | Daegu, South Korea | KO 9 |  | South Korean Super Flyweight Title |  | + Oct. 23 | Hoi-Yul Yang | Daegu, South Korea | W 10 |  | South Korean Super Flyweight Title |  | + Dec. 10 |   Ken Kasugai | Osaka, Japan  | TKO 5 |  | vacant IBF Super Flyweight Title |  |   |  | 1984 |  | Date | Opponent | Place | Result |  | + Jan. 28 |   Prayurasak Muangsurin | Seoul, South Korea | TKO 12 |  | IBF Super Flyweight Title |  | + Mar. 17 |   Diego De Villa | Gwangju City, South Korea | KO 1 |  | IBF Super Flyweight Title |  | + May 26 |   Felix Marquez | Wonju City, South Korea | TKO 6 |  | IBF Super Flyweight Title |  | + July 22 |   William Develos | Busan, South Korea | KO 7 |  | IBF Super Flyweight Title |  |   |  | 1985 |  | Date | Opponent | Place | Result |  | + Jan. 6 |   Kwang-Koo Park | Ulsan, South Korea | KO 15 |  | IBF Super Flyweight Title |  | - May 3 |   Elly Pical | Jakarta, Indonesia  | TKO by 8 |  | IBF Super Flyweight Title |  |   |  | 1986 |  | Date | Opponent | Place | Result |  | - Sept. 27 |   Little Holmes | Jakarta, Indonesia  | L 10 |  |   |  |   |  1987-1988 Inactive |  |   |  | 1989 |  | Date | Opponent | Place | Result |  | + Nov. 25 | Kyong-Mo Chung | Busan, South Korea | KO 3 |  | - Dec. 30 | Hae Il Kim | Seoul, South Korea | KO by 7 |   
  
Summary
Total bouts: 27, Won: 20 (11 inside the limit), Lost: 4 (2 inside the limit), Draw: 3, NC: 0, ND: 0 
 
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