In order to have possibilities to treat the reinforced water-logged lacquer-ware, the reversible experiment was carried out by using poly-alcohol. The first, the water is replaced from the lacquer-ware by methyl-alcohol which has stronger permeability and hydrophile ability. Secondly, the methyl-alcohol is replaced by the stearin-alcohol. The cell wall of dewatering lumber fiber has been reinforced. Purpose of the reversible experiment was that the reinforced lacquer-ware could back to the water-logged status through controlling ambient temperature, based on the theory that the methyl-alcohol dissolved the stearin-alcohol mutually. Changing concentration of liquor, the stearin-alcohol of lacquer-ware can be replaced by the methyl-alcohol. Then the methyl-alcohol can be replaced by water. The experiment proved that the stearin-alcohol is a reversible material. The way of protecting lacquer-ware was simple and costed less time and money so it will be applicable in the conservation of lacquer-ware.