Showcase fixing device

The utility model discloses a showcase fixing device which comprises a base, a showcase is fixedly installed on the top of the base, a plurality of sliding grooves are formed in the two sides of the inner wall of the showcase from top to bottom, sliding strips are connected into the sliding grooves in a sliding mode, a surface table is fixedly installed between every two sliding strips on the same plane, and the surface table is fixedly connected with the top of the showcase. The limiting rod is rotated by rotating the handle, after the limiting rod rotates by 90 degrees anticlockwise, the face table is pulled forwards, the effect that exhibits on the top of the face table can be conveniently taken out of a showcase and replaced is achieved, when the exhibits are replaced, the limiting rod is fixed through attraction with the magnetic strip, the stability of the face table in the operation process is improved, and the service life of the face table is prolonged. And by rotating a handle, a limiting rod is rot