We surveyed the concentrations of PM10, O3, and bioaerosol in public facilities including restaurants, offices and private academies in Chung-Nam province area. During 3 months (from August 30, 2005), the bioaerosol concentrations were measured by a single stage air cascade sampler using the inertia collision catching method for the flux of 28.29 ℓ/min. The mean values were measured as 101.1㎍/㎥ for PM10 and 12.4 ppb for O3. The concentrations of colony for bacteria and fungi were 464 and 287 CFU/㎥ in restaurants, 223 and 271 CFU/㎥ in offices, and 259 and 107 CFU/㎥ in private academics. It is suggested that the regulation of indoor air conditions should be amended to control the quantity of bioaerosol in public facilities. Keywords：Bioaerosol, Indoor Air, Fungi