Electronic price tag shell, plug-in card board and sleeve-in card board

The utility model discloses an electronic price tag shell which comprises a shell body, the shell body is provided with an electronic price tag clamping groove and a card clamping groove, the electronic price tag clamping groove is formed in the back face of the shell body so that an electronic price tag can be clamped into the electronic price tag clamping groove, and the front face of the electronic price tag faces the front face of the shell body; the card clamping groove is located on the periphery of the electronic price tag clamping groove so that the plug-in card board can be inserted into the card clamping groove. The plug-in card board is the plug-in card board and comprises a first information display part and a second information display part, and limiting openings are formed in the two side edges of the inserting part, so that the anti-falling protrusions can penetrate through the limiting openings. The nested card board is matched with the electronic price tag shell and comprises a second informa