The invention discloses an express delivery information protection method, which is based on a ciphertext policy attribute-based encryption algorithm. The method comprises the following steps that: auser inputs sender information, receiver information and express item information through a mobile terminal; encrypting the input information, and sending the encrypted information to an express center; the express center applies for a virtual intermediate number and assigns a pickup person; a pick-up person goes to pick up the express, generates an invisible express waybill, and delivers the express parcel to an express transfer station; the express transfer station assigns a deliveryman to deliver; and the recipient verifies whether the express item information is consistent with the item information in the received parcel. The method comprises the following steps: encrypting sender information, receiver information and express item information; according to the technical scheme, the personal information of the user can be effectively prevented from being stolen by non-staff, the situation that the staff leak the mobile phone number of the user can be avoided by replacing the mobilephone number with the virtual intermediate number, and the safety of the privacy information of the user is greatly improved.