Self-locking electronic price tag guide rail

The utility model discloses a self-locking type electronic price tag guide rail which comprises a guide rail body, the guide rail body is provided with a positioning part, the positioning part limits movement of an electronic price tag through a positioning structure, the positioning structure comprises a positioning groove in the positioning part and an elastic protruding piece arranged on the electronic price tag, and when the electronic price tag moves to the positioning part, the elastic protruding piece is located in the positioning groove. The elastic protruding piece penetrates through the positioning groove. And the guide rail mounting part is arranged on the back surface of the guide rail body and is used for being connected with a goods shelf. The electronic price tag can be positioned, and the electronic price tag cannot move at will and can move only by manually applying a certain large thrust, so that the electronic price tag can be prevented from being touched by mistake and sliding away from th