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This study was carried out to investigate the characteristics of fourteen odor compounds from a total of 10 sam--Sihwa industrial complex. The measurement data are analyzed andcompared with sensation of odor unit. Only a hydrogen sulde out of four sulfur compounds was quantied above the detection limit(0.06ppb) in theresidential area around Banwol industrial complex with leather companies and a sewage treatment plant. The con-centrations of VOCs were higher than those measured from a big city, and styrene showed the relatively high con-~ 37.8ppb). In the case of carbonyl compounds, acetaldehyde was found mostfrequently with the mean of 3.97 ppb, and its concentration difference was not signicant between Banwol andSihwa industrial complex. Of the nitrogen compounds, ammonia was measured at the relatively high concentrationfrom all the sampling sites(12~ 707ppb), and a trimethylamine was found at the odor threshold level(0.1ppb). summer was ve times higher than that in autumn, the concentration of ammonia in autumn was two times higherthan that in summer. However other odorous compounds did not show such strong seasonal variation. Odor-concentration relationship between odor unit and H2S concentrations from industrial sources was examinedand used as odor sensation evaluation, and thus the neighbourhood odor complaints maybe caused during the fourseasons from the results.