In daily life, copper pots are prone to patina when placed in a humid environment, and copper pots react with oxygen to produce copper oxide harmful to human body, so copper chafing pots are harmful to human body. Moreover, the chemical properties of tin are more stable than that of copper, and copper utensils are prone to patina. According to the requirements of the health law, the part that comes into contact with food must be canned. The molecular structure of metallic tin is relatively stable, which makes it difficult to produce metallic taste in the bottom soup of hot pot and affects the taste of broth. Since the appearance of copper hot pot, there has been a tradition and craft of hanging tin high.