Copper is a common metal in our lives, and there is no particular harm in wearing copper jewelry as long as you are not allergic to it; the use of copper tableware may cause nausea, vomiting, and so on. Copper in the humid environment is easy to generate copper green (di-copper hydroxide carbonate), in the air oxidation produces green powder (copper oxide), copper green and green powder are toxic substances. In addition to copper is also prone to oxidation, copper tableware in the cooking process due to friction will produce copper and tin, but also harmful to human health; the use of copper products simmering traditional Chinese medicine, copper is easy to chemical reaction with traditional Chinese medicine, will affect the efficacy of the medicine. Therefore, we should try to avoid using copper tableware in daily life, especially copper tableware with patina.