Aluminum alloy window

The utility model discloses a novel aluminum alloy window. The aluminum alloy window is mainly characterized in that a window frame is of a sandwich structure consisting of an aluminum alloy inner frame, a middle plastic layer and an aluminum alloy outer frame, wherein two wedged grooves are correspondingly formed in the aluminum alloy inner frame and the aluminum alloy outer frame; the plastic layer is of a structure consisting of an upper part and a lower part; wedged connecting pins are arranged on the upper part and the lower part and are embedded into the wedged grooves on the aluminum alloy inner frame and the aluminum alloy outer frame to form a firm body; a lower hinge mounting groove is formed in the aluminum alloy inner frame to accommodate a lower hinge; and an upper hinge mounting groove is formed in window sashes to accommodate an upper hinge. The window sashes and the window frame can be freely opened and closed under the cooperation of the upper hinge and the lower hinge. Problems on sound isol