Lamp panel plane adjusting device and LED display screen

The utility model discloses a lamp panel plane adjusting device and an LED display screen, the lamp panel plane adjusting device comprises a lamp panel acting part, one end of the lamp panel acting part is used for applying force to a lamp panel to enable the lamp panel to move; one end of the first screw joint part is fixedly arranged at the other end of the lamp panel acting part; second screw joint part, the second screw joint part is arranged on the lamp box; the bolt is in threaded connection with the first threaded connection part; a through hole is formed in the position, correspondingto the second screw joint part, of the lamp box, an external tool extends into the through hole from the back of the lamp box and acts on the first screw joint part, so that the through hole rotates relative to the second screw joint part, the screw joint depth is adjusted, the position of the lamp panel acting part is determined by the screw joint depth, and the moving position of the lamp panelis determined. Through the