East Han earthenware horses in the museum collection are large earthenwares excavated in Sichuan province. The dimensions of these earthenwares are usually over 80 cm long and 100 cm tall. They were mostly found broken into pieces when excavated, but were restored before being put into the museum collection. Due to conditions of the burial site, mis-conservation and bad storage conditions, the earthenware horses showed clear signs of erosion and weathering. Therefore, rescue conservation was urgent. The elementary compositions of the earthenware horses were determined. According to the analysis results, 10% ammonia water, 75% ethyl alcohol, 5% acetic acid and distilled water were used to clean the dirt on the surface; acetone was chosen to remove aged glue. Polyvinyl acetate (5%~15%), D-801 or GSP-53 reagents were applied to the weathered, soft, powdered and layered parts to achieve surface consolidation. Resin 505, DG-4 double-phenol adhesive and A356 adhesive were used to glue broken parts. In this way, an East Han earthenware horse was successfully conserved and restored. This work provided valuable experience for the conservation of large scale earthenware horses.