Building curtain wall opening window structure

The utility model discloses a building curtain wall opening window structure which comprises a curtain wall window frame structure. The top outer edge end of the opening window structure is rotationally connected to the top inner edge end of the curtain wall window frame structure; the transmission rod structure is vertically and fixedly connected to the inner side surfaces of the upper parts of two sides of the opening window structure; one end of the closing air pressure spring structure is located on the upper portion of the curtain wall window frame structure in a rotating connection mode, and the other end of the closing air pressure spring structure is connected with the end, away from the opening window structure, of the transmission rod structure in a rotating connection mode. One end of the opening air pressure spring structure is rotationally assembled on the bottom end face of the curtain wall window frame structure, and the other end of the opening air pressure spring structure is rotationally con