The invention discloses a sociology demonstration teaching device with a teaching interaction structure, and the device comprises an installation frame, a supporting rod, an upper protection plate, acleaning brush, an expression reply plate, and a clamping plate, the lower part of the installation frame is in screw connection with a fixed rod, and the bottom end of the fixed rod is provided witha universal wheel through a bolt, and the interior of the upper protection plate is in screw connection with a gear tooth rod. And a first circular gear is connected to the gear tooth rod in an engaged mode, a second circular gear is connected to the first circular gear in an engaged mode, and cleaning brushes are connected to the first circular gear and the second circular gear through screws. The sociology demonstration teaching device with the teaching interaction structure is provided with the cleaning brush, and when the lower protection plate moves upwards into the upper protection plateto be stored, the first circular gear can drive the second circular gear to rotate at the same time under the action of the gear tooth rod; and at the moment, dust cleaning work can be conducted on the touch display screen conveniently and rapidly in combination with all the cleaning brushes, and the use efficiency of the device is effectively improved.