The present invention provides a support frame for packaging a liquid crystal glass panel, which includes: four corner pieces, upper connection bars, and lower connection bars. The upper connection bars are connected to top ends of the four corner pieces to form an upper sub-frame. The lower connection bars are connected to bottom ends of the four corner pieces to form a bottom bracket, which includes a lower sub-frame corresponding to the upper sub-frame and a carriage rack located inside and connected to the lower sub-frame. The support frame is rigid and reinforces a tray so that the problem of deformation of the tray caused by stacking or handling trays can be eliminated. The support frame is of a knockdown arrangement composed of multiple components in such a way that a portion of the components may be shared for contained products of different sizes so as to reduce the manufacturing cost.