The invention relates to a dilatancy capacity energy-saving sight safe window, which is characterized in that: there is a frame projecting from the outer wall to support the window frame and window sash; said frame is a frame cover, which is formed by six side surfaces, as inner, outer, left, right, upper and lower; and each side surface can be mounted with relative window frame and window sash. The invention can be mounted with an inner frame and a multifunctional bracket, and the base of external air conditioner. The invention can effectively expand the capacity, save energy and improve the safety. |