To provide a winning notification system capable of eliminating labor and time to collate a winning number and preventing a gift pertinent to the winning in lottery from being missed.

Personal information including access information to a user terminal 200 of a user A and the access information of users B to D at a reception side to user terminals 300B to 300D are written in an RFID label 601 of a postcard 600 with a lottery by the writer function of a printer 210, and when the postcard 600 with a lottery is posted to a mail post 400, the information of the RFID label 601 is read, and transmitted to a management server 120, and when the winning number is decided, the pertinent lottery number information is retrieved from a database 130, and the user terminal 200 at the sending side of the postcard 600 with a lottery and the user terminals 300B to 300D at the reception side of the postcard 600 with a lottery are notified of the result of winning in lottery based on access information corresponding to the retrieved lottery number information.