An installation support for a display screen, comprising: at least two carbon-fiber vertical frames (200, 210, 220), and two aluminum-alloy horizontal frames (100, 101, 102), each of the carbon-fiber vertical frames (200, 210, 220) being spaced in sequence, one end of each carbon-fiber vertical frame (200, 210, 220) being connected to one of the aluminum-alloy horizontal frames (100, 101, 102), and the other end of each carbon-fiber vertical frame (200, 210, 220) being connected to the other aluminum-alloy horizontal frame (100, 101, 102), each of the aluminum-alloy horizontal frames (100, 101, 102) comprises a first frame, a second frame, a third frame, a first supporting beam and a second supporting beam, one end of the first frame being connected to one end of the second frame, the other end of the first frame being connected to the third frame, an end of the second frame away from the first frame being connected to one carbon-fiber vertical frame (200, 210, 220), an end of the third frame away from the first frame being connected to another carbon-fiber vertical frame (200, 210, 220), an end of the first supporting beam being connected to a position of the first frame away from the second frame, the other end of the first supporting beam being connected to a position of the second frame away from the first frame, an end of the second supporting beam being connected to a position of the first frame away from the third frame, and the other end of the second supporting beam being connected to a position of the third frame away from the first frame, characterized in that the first supporting beam is arranged curved, bending towards a joint of the first frame and the second frame, the second supporting beam is arranged curved, bending towards a joint of the first frame and the third frame, the first supporting beam and the second supporting beam are interconnected through a horizontal beam at bending curves of the first supporting beam and the second supporting beam. at least two carbon-fiber vertical frames (200, 210, 220), and two aluminum-alloy horizontal frames (100, 101, 102), each of the carbon-fiber vertical frames (200, 210, 220) being spaced in sequence, one end of each carbon-fiber vertical frame (200, 210, 220) being connected to one of the aluminum-alloy horizontal frames (100, 101, 102), and the other end of each carbon-fiber vertical frame (200, 210, 220) being connected to the other aluminum-alloy horizontal frame (100, 101, 102), each of the aluminum-alloy horizontal frames (100, 101, 102) comprises a first frame, a second frame, a third frame, a first supporting beam and a second supporting beam, one end of the first frame being connected to one end of the second frame, the other end of the first frame being connected to the third frame, an end of the second frame away from the first frame being connected to one carbon-fiber vertical frame (200, 210, 220), an end of the third frame away from the first frame being connected to another carbon-fiber vertical frame (200, 210, 220), an end of the first supporting beam being connected to a position of the first frame away from the second frame, the other end of the first supporting beam being connected to a position of the second frame away from the first frame, an end of the second supporting beam being connected to a position of the first frame away from the third frame, and the other end of the second supporting beam being connected to a position of the third frame away from the first frame, characterized in that the first supporting beam is arranged curved, bending towards a joint of the first frame and the second frame, the second supporting beam is arranged curved, bending towards a joint of the first frame and the third frame, the first supporting beam and the second supporting beam are interconnected through a horizontal beam at bending curves of the first supporting beam and the second supporting beam.