Abstract: This invention describes a household safe window, which has a fixed window frame, a large sash, a small sash, and a first and second linking member. The fixed window frame is embedded in a pre-formed frame. The opposite sides of the large sash, via the first linking member, are pivotally fitted into the fixed window frame, thereby enabling the large sash to open along the right or left side. The large sash is formed as a carved-through frame, which can receive the small sash. A first pivoting member is provided on the large sash, which is used to pivotally interconnect with a second pivoting member of the small sash, thereby enabling the second link member to connect with the opposite sides of the small sash to drive the window to swing up and down.