The invention provides a ventilating and filtering window frame easy to dismount and clean.A window frame body comprises a pair of window frame horizontal supports and a pair of window frame longitudinal supports, the ends of the two window frame horizontal supports on one side are connected through the window frame longitudinal supports, a strip-shaped air inlet is formed on the side, facing the outside, of the upper window frame horizontal support, a strip-shaped air outlet is formed on the side, facing the inside, of the lower window frame horizontal support, a pair of air suction fans is fixedly installed at the lower ends of the two window frame longitudinal supports respectively, strip-shaped openings are formed in the sides, facing the inside, of the window frame longitudinal supports, movable cover plates are located on the corresponding strip-shaped openings, installing racks are located in the corresponding window frame longitudinal supports, and inserting-connecting filter pieces are inserted into corresponding insertion grooves in an inserted mode.The window frame is hollow, corresponding ventilation devices are arranged in the lower two corners in the window frame, outdoor air enters from the upper portion of the window frame and then is discharged out from the lower portion of the window frame through filtering devices on the two sides of the window frame, the filtering devices are convenient to dismount and clean, and corresponding functions can be added according to the actual demands.