Modularized sound insulation screen

The invention discloses a modularized sound insulation screen, and belongs to the technical field of road sound insulation barriers. A modularized sound insulation screen comprises a sound insulation screen body, a noise reduction layer is fixedly arranged in the sound insulation screen body, a shutter and an air inlet are formed in the side, facing a sound source, of the sound insulation screen body, the shutter and the air inlet are formed in the side, back to the sound source, of the sound insulation screen body, and an obliquely-arranged guide plate is fixedly connected to the position, close to the air inlet, of the inner wall of the sound insulation screen body; an air inlet channel is formed between the noise reduction layer and the inner wall of the sound insulation screen body, a connecting rod is fixedly connected to the inner wall of the sound insulation screen body at the louver, a knocking plate is hinged to the outer portion of the connecting rod, a balance weight plate is fixedly connected to t