The Azumazaka tomb is located in Atsugi city, Kanagawa prefecture (Japan), about 30 kilometers southwest of Tokyo. The tomb excavated is presumed to be of the 4th century AD. The excavated objects included an iron sword, a bronze mirror, bamboo comb, and a fragment of wooden coffin. The iron sword was treated with the Soxhlet method for desalination, followed by an organofunctional silane and impregnation with acrylic resin emulsion. The Soxhlet extraction method for desalination was applied also to the mirror which was then treated with benzotriazole for stabilization. The coffin fragment and comb were soaked in mannitol-saturated solution for pretreatment, followed by a vacuum freeze-drying treatment. The objects were examined as to material and corrosion products in order to know the place of production of material, etc. The author has tried to discuss the differences in the treatment problems in the West and East. -- AATA