Copper itself is non-toxic and is not toxic when contained in normal amounts in the human body. Copper is an important trace element and is an effective catalyst for redox systems. Therefore, when the amount of copper in the body is within the normal range, it is usually harmless to the human body. If frequent exposure to copper products or utensils, etc., such as accidentally eating contaminated food such as copper sulfate, or frequent use of utensils or copper pipes with high copper content, as well as occupational exposure in industries such as asphalt manufacturing and alloy fabrication, can result in humans being exposed to large quantities of copper, which may lead to copper poisoning. Chronic Copper Poisoning: Prolonged exposure to high copper content or prolonged use of substandard copper-containing tableware and drinking water pipes makes the body susceptible to chronic copper poisoning, leading to chronic liver disease. In addition to the psychological aspects of the human body may also have a loss of memory, easy to excitement, poor concentration and other symptoms, which may also easily lead to neurasthenia or neuritis and other comprehensive symptoms.