Disclosed in the present invention are a system for sending and receiving express mail, and an express mail method, said system comprising: a QR code generating apparatus used to generate a QR code from express mail information, a QR code printing apparatus, a QR code identification apparatus, an express mail service information platform used to provide service information for express mail, a receipt code sending apparatus used to send a receipt code which matches the QR code to a user, and a receipt code input apparatus used to input the receipt code when the user signs for the receipt of the express mail. The system for sending and receiving express mail, and the express mail method according to the present invention offer the following advantageous effects: firstly, using a QR code on an express waybill for identification ensures privacy and information safety; secondly, a platform for collecting mail items makes it convenient for a sender to select an appropriate express mail courier, and for home pickup services to be obtained, thus offering convenience to the sender when sending items by express mail; thirdly, when receiving items, a recipient is required to input a receipt code, ensuring the recipient's rights and interests, and preventing the recipient's rights and interests from being harmed by courier personnel during the delivery process.