Screen window capable of automatically removing dust

The invention relates to a screen window capable of automatically removing dust. The screen window comprises a fixed shell, a storage cylinder, a window screen and a fixing strip; a flapping plate is arranged in the fixed shell; a flapping pressure spring is connected between the back surface of the flapping plate and the fixed shell; pushing wheels and driving wheels are disposed at barrel ends of the storage cylinder, pushing pieces are fixedly mounted on both ends of the flapping plate, and the pushing pieces are in contact with teeth on the pushing wheels in a matched mode; a dust collecting cover is disposed on the other side of the window screen, a dust outlet is formed in the shell, and the dust collection cover and the dust outlet communicate through a dust guiding passage; and a suction cavity is formed in the dust guiding passage, the suction cavity is internally provided with a transmission roller, transmission wheels are arranged at two ends of the transmission roller, and the transmission wheels