The utility model provides a nameplate dolly used in a high-tension switch cabinet. The nameplate dolly comprises a chassis (1) made of insulating materials and a nameplate frame (2). The nameplate frame (2) is fixedly installed at one end of the chassis (1), a first nameplate (3) and a second nameplate (4) are fixedly installed on the nameplate frame (2), and the outer end of the nameplate frame (2) is further provided with a clamping grid (6). The bottom of the chassis (1) is further provided with four wheels (7). The nameplate dolly used in the high-tension switch cabinet has the advantages of being obvious in warning effect, good in isolation and protection effect and capable of guaranteeing the effect that the nameplates cannot be left in the cabinet.