Purple copper pots are generally not allowed to boil Chinese medicine. Copper pots mainly contain copper, an element that is chemically unstable and easily oxidized. Boiling Chinese medicine in a copper pot will easily react with the Chinese medicine, thus affecting the efficacy of the Chinese medicine. In addition to copper pots, iron pots, aluminum pots and tin pots are not recommended for boiling Chinese medicine, their chemical properties are also unstable. It is generally recommended that casseroles are the best, enameled pots, stainless steel pots and glass decanters are fine, these types of pots are chemically more stable and less likely to react with Chinese medicines. Boiling Chinese medicine needs to be carried out under the guidance of a professional physician, and unauthorized replacement of utensils, addition or reduction of medicines, in order to prevent adverse effects.