The utility model relates to an outdoor electronic display screen support. The outdoor electronic display screen support comprises two base plates horizontally arranged on the ground in a spaced mode. A fixing pile which can penetrate underground is fixedly and perpendicularly connected to the bottom surface of each base plate. A supporting pillar is fixedly and perpendicularly connected to the top surface of each base plate. A horizontal plate is installed between the two supporting pillars. A left side plate and a right side plate are installed on the position close to the two ends in the length direction, of the horizontal plate. A rear baffle is fixedly installed on one side of the horizontal plate in the width direction. The top ends of the two supporting pillars are respectively provided with a fixed pulley. The two ends, in the length direction, of the horizontal plate are respectively connected with a stay cord. The two stay cords are wound around the two fixed pulleys respectively. The top ends of the two supporting pillars are connected with a cross beam. A bracket which can support the horizontal plate is installed on the cross beam in a rotary mode, and a rainshed is installed on the cross beam through a supporting frame. The outdoor electronic display screen support has the advantages of being simple in structure, safe and reliable in use, convenient to mount and dismount, and convenient to maintain.