Jade beads unearthed at the Huating site in Xinyo, Jiangsu Province, appeared loose and chalking. When someone touches or moves the beads, they may shed some powder or even break into pieces. The phenomenon indicated that the jade has weathered seriously. The jade samples were tested by X-ray diffraction (XRD), section polarizing microscopic observation, X-ray fluorescence analysis (XRF) and optical microscopic observation. The result shows that the jade is made of antigorite. Taking into account the degree of damage to these jade beads, they were reinforced with a 14% solution of tetraethyl orthosilicate (TEOS) and reinforced with a 3% solution of fluorubber for surface protection. A total of 107 jade beads from the Huating Site in Xinyo were strengthened successfully in this way. This research should benefit the future conservation of fragile and weathered ancient jades.