The precipitated residue of grape wine during processing contains unknown amount of tartaric acid. Useful tartaric acid can be purified from these valueless wine lees. Tartaric acid can dissolve in water, ethanol and slightly dissolve in ethyl ether. Due to its character, this experiment chose water as the major solvent and tried different methods and various dissolving orders and conditions to obtain the yields of tartaric acid. Then each process was evaluated by their economic value as a reference to determine the possibility of the large scale purification of tartaric acid from wine residue.