Law propaganda device capable of being clamped and fixed

The utility model discloses a law propaganda device capable of being clamped and fixed, which comprises a mounting rack, the mounting rack comprises a display panel rotatably mounted on the surface of the mounting rack, the bottom of the mounting rack is fixedly connected with a collecting box, and a scraping and sweeping assembly comprises a motor and two first screw rods which are fixedly mounted in the mounting rack. The output end of the motor is fixedly connected with one of the first lead screws, through the arrangement of the scraping and sweeping assembly, when dust is attached to the surface of the display panel, the motor is started, the motor drives the first lead screws to rotate so as to drive the scraping plate to move, the scraping plate moves to scrape off dust and dirt on the surface of the display panel, and therefore the surface of the display panel can be cleaned up; the advertising effect is not affected, manual cleaning is not needed, dust on the surface of the display panel is scraped o