The invention relates to the technical field of LED display screens, in particular to a high-precision LED display screen based on a metal grid touch film. The LED display screen comprises a mountingframe, display modules, fixing structures, a containing structure, an overturning structure, a detaching structure and a connecting structure, by means of the fixing structures, the installation stability between columns of the display modules can be improved, the firmness degree of the assembled display screen is improved, the using effect is guaranteed, the damaged display modules can be conveniently, rapidly and independently disassembled through the disassembling structures, and the maintenance efficiency of the display screen is improved. By means of the connecting structure, the displaymodules in the same column can be fixed in the pre-installation process, the stability between the display modules is guaranteed, the whole display screen can be overturned by a certain angle and keptthrough the overturning structure, and the back side of the display screen with the high installation position can be overhauled conveniently. Through the containing structure, parts and the like used in the overhauling process can be conveniently and temporarily stored.