The purpose of this study is to identify hazardous physical factors and chemical air pollutants in conservation museum in order to protect the cultural heritage. For this, we collected and re-analyzed the articles that were published from 2006 to 2007 by National Research Institute of Cultural Heritage for temperature, relative humidity and the level of pollutants (PM10, CO2, HCHO, CO, NO2, Rn, TVOCs, O3, SO2) in exhibition hall and storage in museum. The pooled average level of temperature at exhibition hall and storage in museum was 23.5±1.4℃ and 20.6±1.1℃, respectively. The range of temperature variation was 5.4℃ for exhibition hall and 4.5℃ for storage. The pooled average concentration of TVOCs in exhibition hall and storage in museum was 493.6±125.6㎍/㎥ and 788.9±157.5㎍/㎥, respectively. These exceeded 400㎍/㎥ which is the guideline of national law for the Korean Ministry of Public Administration and Security (KMOPAS). Other surveyed pollutants were as per the guidelines of the national law for the Korean Ministry of Environment (KMOE) and the KMOPAS. Through the consideration of the physical and chemical properties and the result of meta-analysis for thermal environment and surveyed temperature, humidity, PM10, NO2, SO2, O3, TVOCs, and HCHO were the identified hazardous physical factors and chemical pollutants at exhibition halls and storages in museum. Keywords : Cultural heritage, Exhibit hall, Storage, Conservation environment