Provided are a fixing structure and a liquid crystal display device. The fixing structure comprises: a front frame with a rectangle shape has four lateral sides, each lateral side includes a flat first extending part, and the four first extending part form four corners. Each corner is formed with a first mounting hole, and the first mounting hole is used for fixing the front frame from the corner by a fastening member passing through the first mounting hole The liquid crystal display device comprises a liquid crystal panel and the above fixing structure for installing the liquid crystal panel. The fixing structure and the liquid crystal display device reduce the influence of the fastening members on visible area, decrease the working hour for assemble the device, and lower the material cost.