Abstract: An electronic invoice issuing system for an electronic commerce website is provided. The system comprises: an online trading platform; a security electronic invoice apparatus, preset with a code table of goods and services, an electronic invoice template and a digital signature of an electronic commerce enterprise, and configured to receive a payer information and a trading information from the online trading platform, to add the payer information and the trading information into the electronic invoice template according to the code table of goods and services so as to issue an electronic invoice, and to digitally sign the electronic invoice by the digital certificate of the electronic commerce enterprise; and an electronic invoice information management platform with an access interface, configured to receive the electronic invoice from the security electronic invoice apparatus, to store a registration of the electronic invoice and to provide the electronic invoice to a predesignated user.