In the study, public facilities in Korea covered by the law, including PC-rooms, child care facilities, bus terminal waiting rooms, elderly nursing facilities, movie theaters, underground subway stations, super super markets and indoor parking lots (8 types of facility, for a total of 32 locations) were investigated for indoor gas phase PAHs and particulate phase PAHs. PAHs source profiles were investigated as well. Finally, public facilities PAHs were estimated the main influencing factors and sources of indoor by factor analysis. Underground subway stations and PC-rooms tended to be higher the concentration than other facilities. It judged each the effects of car exhaust, smoking, and elderly nursing facilities, child care facilities, movie theaters, where the influence of the outdoor air is less relatively direct effect that car exhaust and incoming of ambient air, were showed low concentration. Super super markets displayed a large amount of different products and bus terminal waiting rooms influenced car exhaust is higher than those that. Sources of indoor PAHs in public facilities make out profiling(cooking process: broiling meat and fish, incense, shampoo, decorative candles, tobacco) and on the effects of ambient on reported existing literature(of diesel and gasoline engines, heating fuel, coke oven, a wood combustion) was referred for factor analysis to estimate emission sources. As a result of particulate PAHs phase, three major factors were showed that factor 1: cooking, use of gas fuel and combustion devices, factor 2: smoking. Factor 3: car exhaust. Factor analysis results of gas PAHs phase are similar to particulate PAHs phase. Additionally, factors such as air fresheners was estimated. Keywords : PAHs, Public facilities, Super super market, Source profile, Factor analysis