| No amateur results Professional record|  |  | 1977 |  | Date | Opponent | Place | Result |  | + Oct. 16 | Sang-Koo Lee | Seoul, South Korea | KO 2 |  |  |  |  |  | 1978 Inactive
 |  |  |  | 1979 |  | Date | Opponent | Place | Result |  | - Aug. 11 | Chung-Kwon Choi | Seoul, South Korea | L 4 |  |  |  | 1980 |  | Date | Opponent | Place | Result |  | + Nov. 18 | Young-Bom Song | Seoul, South Korea | W 4 |  | + Nov. 19 | Chun-Jae Lee | Seoul, South Korea | KO 4 |  | + Nov. 23 | Sang-Moon Lee | Seoul, South Korea | W 4 |  | + Nov. 30 | Chang-Soo Chung | Seoul, South Korea | W 4 |  | + Dec. 7 | Yang-Lim Lee | Seoul, South Korea | KO 2 |  |  |  | 1981 |  | Date | Opponent | Place | Result |  | + Feb. 14 | Jin-Hyun Cho | Seoul, South Korea | KO 2 |  | + Apr. 4 | Tsuguyuki Toma | Wonju City, South Korea | KO 2 |  | - Apr. 19 | Yoshiyuki Uchikoshi | Seoul, South Korea | LDQ 1 |  | + June 27 | Frankie Granados | Busan, South Korea | KO 1 |  | = July 31 | Lord Esmero | Busan, South Korea | Draw 10 |  | + Oct. 17 |  William Develos | Seoul, South Korea | W 12 |  | OPBF Super Flyweight Title |  | + Dec. 6 | Hiroyuki Kobayashi | Gwangju City, South Korea | W 10 |  |  |  | 1982 |  | Date | Opponent | Place | Result |  | + Jan. 3 |  Diego De Villa | Busan, South Korea | KO 7 |  | + Mar. 7 | Ali Formentera | Daegu, South Korea | KO 6 |  | OPBF Super Flyweight Title |  | + May 8 |  Payao Poontarat | Seoul, South Korea | W 12 |  | OPBF Super Flyweight Title |  | + June 20 | Elid Fernandez | Gwangju City, South Korea | TKO 3 |  | + Sept. 19 | Joe Hiyas | Busan, South Korea | TW 7 |  | OPBF Super Flyweight Title |  | + Oct. 30 | Flash Jagdon | Daegu, South Korea | KO 1 |  |  |  | 1983 |  | Date | Opponent | Place | Result |  | + Jan. 2 | Phaktai Lipovitan | Daejeon, South Korea | KO 1 |  | OPBF Super Flyweight Title |  | + Mar. 12 | Rene Aroy | Masan City, South Korea | KO 9 |  | + May 14 | Pat Bracero | Busan, South Korea | KO 2 |  | OPBF Super Flyweight Title |  | + July 24 | Ruben De La Cruz | Gwangju City, South Korea | KO 4 |  | - Oct. 6 |  Jiro  Watanabe | Osaka, Japan | TL 11 |  | WBA Super Flyweight Title |  | + Dec. 24 |  Rene Busayong | Seoul, South Korea | KO 5 |  | inaugural IBF Flyweight Title |  |  |  | 1984 |  | Date | Opponent | Place | Result |  | + Feb. 25 |  Roger Castillo | Seoul, South Korea | TW 12 |  | IBF Flyweight Title |  | + May 19 |  Ian  Clyde | Daejeon, South Korea | W 15 |  | IBF Flyweight Title |  | + Sept. 7 |  Joaquin Flores Caraballo | Chungju, South Korea | KO 12 |  | IBF Flyweight Title |  |  |  | 1985 |  | Date | Opponent | Place | Result |  | = Jan. 25 |  Jong-Kwan Chung | Daejeon, South Korea | Draw 15 |  | IBF Flyweight Title |  | + Apr. 15 |  Shinobu Kawashima | Pohang City, South Korea | KO 3 |  | IBF Flyweight Title |  | = July 17 |  Jong-Kwan Chung | Masan City, South Korea | Draw 15 |  | IBF Flyweight Title |  | - Dec. 20 |  Jong-Kwan Chung | Busan, South Korea | TKO by 4 |  | IBF Flyweight Title |  |  |  | 1986 |  | Date | Opponent | Place | Result |  | + Dec. 3 |  Little Holmes | Jakarta, Indonesia | KO 3 |  |  |  | 1987 |  | Date | Opponent | Place | Result |  | - May 17 |  Tae-Il Chang | Busan, South Korea | L 15 |  | vacant IBF Super Flyweight Title | 
   
SummaryTotal bouts: 35, Won: 27 (18 inside the limit), Lost: 5 (1 inside the limit), Draw: 3, NC: 0, ND: 0 |