In July 2009, a set of jade ornaments was unearthed during Tomb M98 excavation as part of the extension project of Xianyang International Airport. Due to the limited conservation supplies, conservators packed the entire set in plaster and moved it back to the lab. Then micro-excavation was conducted layer by layer, along with cleaning and documentation (such as drawing, photographing and description). The jade ornament set was successfully restored through discussion with archaeologists and review of the literature, as well as reference to previous similar conservation work. In the meantime, a series of scientific analysis were carried out. The results show that 1) the hook was made of bronze with a gilt surface; 2) the jade plate was made of nephrite; 3) the beads were made of lead glass that was originally yellowish green, but the surface of which is now covered with a white layer of lead carbonate due to serious corrosion; 4) the two pendants were made of calcite.