The National Research Institute for Cultural Properties，Tokyo，in collaboration with the Agency for Cultural Affairs（Bunkacho）advises museums on how they should design their facilities to provide adequate environment for the exhibition of nationallydesignated cultural objects．This report shows the results of inspection in 2002． The number of advice given was 803 in 2002．Results of inspections were reported to 20 museums in 2002 for their exhibitions．Methyl bromide has been widely used as auseful insecticide for cultural properties in Japan．However，the use of methyl bromide will be banned at the end of 2004 for the protection of the stratospheric ozone layer．Now prevention of pest problems without the use of chemicals is required．Therefore，the importance of monitoring temperature and humidity of museum buildings and keeping them at appropriate levels will increase for preventing pest problems．It is also important to check the museum environment such as localized condensation due to uneven temperature distribution, poor damp proofing，leaking from water pipes，etc
