Electronic invoice obtaining method and system

The invention discloses an electronic invoice obtaining method and system. An invoicing instruction sent by a collection system is received and comprises transaction inventory information, an electronic invoice is generated according to the transaction inventory information, an identification code of the electronic invoice is obtained and sent to the collection system, and a consumer can obtain the electronic invoice according to the identification code. According to the sachem, the identification code of the electronic invoice is directly provided for the consumer through the collection system, the consumer does not need to provide an email address, the phenomenon of queuing for collection due to email address inputting is avoided, and the collection efficiency is improved.