The invention discloses a Bluetooth communication security protection method for an electric power marketing major. The method comprises the steps that a client is connected with a server according toan obtained Bluetooth address of the server; after the client is successfully connected with the server, the client and the server perform bidirectional identity authentication by adopting a certificate chain of a power utilization information key management system; and after the bidirectional identity authentication of the client and the server is passed, the client and the server encrypt and transmit the service data by using a national cryptographic algorithm, so that the information security problem of Bluetooth data communication in the field of power marketing is solved.