Background: Malignant tumors seriously hurt human health. Surgery, radiotherapy, chemotherapy or combination with these several methods is ordinary therapy in clinic. Surgery and radiotherapy have little effect on metastatic cells. Because of drug resistance, chemotherapy often cause tumor recur. As an essential metal element of eukaryotic organisms, copper has close realation with tumors. It has been identified that many tumor patients have high serum copper and abnormality of copper metabolism and distrib...