Large screen back frame capable of being quickly disassembled and assembled

The utility model discloses a large screen back frame capable of being rapidly disassembled and assembled, and relates to the technical field of screen supports. Comprising four stand columns arranged at intervals, and a screen mounting area is arranged between every two adjacent stand columns; a plurality of screen back boxes are arranged in each screen mounting area, and screen hangers for hanging screens are detachably connected to the screen back boxes; the screen back box is detachably connected with the stand column through the connecting assembly. The four stand columns used for supporting the whole screen back frame are arranged independently, the screen back box is detachably connected between every two adjacent stand columns, and the screen back box is detachably connected with the screen hanging frame used for hanging the screen. All the components of the screen back frame are detachably connected, the weight and the size of a single component are reduced to a great extent, manual disassembly and a