This research is aimed at assessing the impacts of several cleaning agents frequently applied to the porcelain artifacts for removing dirt and stains.Two primary methods introduced here are:(1)comparison of the surface before and after treatment and (2) dissolution test of pastes and glazes. The experiments show that hydrochloric acid,oxalic acid,citric acid,sodium hexametaphosphate, and disodium EDTA are more efficient for removing the yellow stains adhering to the surfaces. However,almost all cleaning agents cause some damage to the porcelain.Alkaline solution and chelating agents show a strong corrosive effect.Acidic agents,such as nitric acid,oxalic acid and hydrochloric acid,also result in serious corrosion.In general,agents with good cleaning effect also impose more damage to the porcelain artifacts.