The main materials of the abundant rare films which were produced along with occurring and development of photograph are slice group, cementation layer, sensitization layer, aegis layer etc.. From the chemic composing, the slice group is mainly pyroxiylin ester, cellulose acetate ester and polyester, the cementation layer is mostly glutin, the sensitization later is greatly silver salt or compound of silver salt and even nitrogen dye, the aegis layer is also preservative gluetin. These materials are suffered from all-around facts, such as wet, temperature, oxygenation, and mildew etc. and even destroyed. Based on these films urgently been restored and conservation, the storage measures of these films are discussed from the chemic composing.