First of all, many people think that copper pots are harmful because they know that patina is toxic, but in fact, patina is an insoluble compound, which is insoluble in cold water or hot water. Even if it enters the human body, it is difficult to be absorbed, but it will be directly excreted. Copper pots have been used for thousands of years and are still used every day in Yunnan, Tibet and other places, but no record of human health damage has been found so far.

Secondly, iron and aluminum appliances in life are very common, but they are almost harmless to the human body, otherwise they will not be used in large areas. Compared with aluminum and iron, the decomposition of copper in the process of boiling water at high temperature is smaller, so the harm of making tea in copper pot to the body is very small and can be ignored.