An anti-collision device for LED screen, comprising a box body and a display module arranged on the box body, wherein, the device further comprises a telescopic rotating mechanism and an anti-collision sheet; a peripheral side of the box body is provided with a mounting hole and a receiving groove for receiving the anti-collision sheet; the telescopic rotating mechanism is embedded in the mounting hole and movably connected with the box body; the anti-collision sheet is fixedly connected with the telescopic rotating mechanism; characterized in that when the telescopic rotating mechanism is not subjected to external force in its direction of extension and retraction, the telescopic rotating mechanism automatically drives the anti-collision sheet located in the receiving groove to extend and rotate to shield a peripheral side of the display module outside the receiving groove; when the telescopic rotating mechanism is subjected to external force in its direction of retracting to the box body, the telescopic rotating mechanism is pressed toward the mounting hole, and automatically drives the anti-collision sheet positioned outside the receiving groove to rotate and retract, and the anti-collision sheet is embedded in the receiving groove; the telescopic rotating mechanism comprises an elastic mechanism embedded in the mounting hole, and the anti-collision sheet is fixed on the elastic mechanism; the elastic mechanism can drive the anti-collision sheet to extend out of or retract into the receiving groove; the elastic mechanism comprises a guide shaft slidably arranged in the mounting hole and a first elastic component embedded in the mounting hole, and the anti-collision sheet is fixedly connected with the guide shaft; two ends of the first elastic component are respectively abutted with the guide shaft and a hole wall of the mounting hole; the guide shaft is a shaft sleeve; the telescopic rotating mechanism further comprises a positioning shaft, the positioning shaft is embedded in the shaft sleeve and is non-rotatably connected with the hole wall of the mounting hole; an outer side of the positioning shaft or an inner side of the shaft sleeve is provided with a spirally-rising sliding groove with closed ends, and the outer side of the positioning shaft or the inner side of the shaft sleeve is correspondingly provided with a sliding block; and the sliding block is slidably arranged in the sliding groove, and the first elastic component can drive the shaft sleeve to move relative to the positioning shaft. a peripheral side of the box body is provided with a mounting hole and a receiving groove for receiving the anti-collision sheet; the telescopic rotating mechanism is embedded in the mounting hole and movably connected with the box body; the anti-collision sheet is fixedly connected with the telescopic rotating mechanism; characterized in that when the telescopic rotating mechanism is not subjected to external force in its direction of extension and retraction, the telescopic rotating mechanism automatically drives the anti-collision sheet located in the receiving groove to extend and rotate to shield a peripheral side of the display module outside the receiving groove; when the telescopic rotating mechanism is subjected to external force in its direction of retracting to the box body, the telescopic rotating mechanism is pressed toward the mounting hole, and automatically drives the anti-collision sheet positioned outside the receiving groove to rotate and retract, and the anti-collision sheet is embedded in the receiving groove; the telescopic rotating mechanism comprises an elastic mechanism embedded in the mounting hole, and the anti-collision sheet is fixed on the elastic mechanism; the elastic mechanism can drive the anti-collision sheet to extend out of or retract into the receiving groove; the elastic mechanism comprises a guide shaft slidably arranged in the mounting hole and a first elastic component embedded in the mounting hole, and the anti-collision sheet is fixedly connected with the guide shaft; two ends of the first elastic component are respectively abutted with the guide shaft and a hole wall of the mounting hole; the guide shaft is a shaft sleeve; the telescopic rotating mechanism further comprises a positioning shaft, the positioning shaft is embedded in the shaft sleeve and is non-rotatably connected with the hole wall of the mounting hole; an outer side of the positioning shaft or an inner side of the shaft sleeve is provided with a spirally-rising sliding groove with closed ends, and the outer side of the positioning shaft or the inner side of the shaft sleeve is correspondingly provided with a sliding block; and the sliding block is slidably arranged in the sliding groove, and the first elastic component can drive the shaft sleeve to move relative to the positioning shaft.