This study was conducted to determine distribution and characteristics of odors in Yeo-su industrial complex. The sampling of odor compounds was performed from may to september in 2009, twice a month, both morning and afternoon. The analytical items were meteorological data, complex odor, legally-designated 17 odor compounds. Complex odor and 17 odor compounds in Yeo-su industrial complex were suitable in emmission standard(s). The major odor compounds were appeared to be Hydrogen sulfide, Methyl mercaptan, Trimethyl amine, Ammonia. So, the industrial complex in Yeo-su was influenced by the Nitrogen and Sulfide odor substances. The distribution of concentration was investigated Ammonia＞ Stylene＞ Xylene＞ Acetaldehyde in order. We suggest that VOCs, causing the odor problem in Yeo-su, should be mutually controlled with Hazardous Air Monitoring Network.