A lifting mechanism for an LCD frame of an exhibition car belongs to the technical field of exhibition vehicles. The lifting mechanism comprises a pair of hoisting devices which are corresponding to each other and arranged on a platform floor of the exhibition car, the pair of the hoisting devices are fitted with a hoisting frame in a sliding manner respectively; one of the hoisting devices is fixed with the lower part of an end along the length direction of the LCD frame of the exhibition car, and the other hoisting device is fixed with the lower part of the other end along the length direction of the LCD frame of the exhibition car. The lifting mechanism has the advantages that by hoisting or lowering the hoisting frame with the hoisting devices, the LCD frame is hoisted or lowered along with the hoisting frame, thus meeting the requirement of freely lifting the LCD frame; the pair of hoisting frames has good holding effect on the LCD frame and can ensure the rigidity of the LCD frame to avoid swing which affects the exhibition in the course of exhibition.