Sunshade system for window

The sun-shading system for the window comprises a frame body, a rotating shaft, sun-shading cloth, a curve fitting chain, a vertical sliding rail and a vertical telescopic rod, the rotating shaft is rotationally connected to the frame body, the sun-shading cloth is wound on the rotating shaft, the vertical sliding rail is arranged on the inner side edge of the frame body, and the curve fitting chain is arranged on the vertical sliding rail. The two ends of the curve fitting chain are connected to the vertical sliding rails in a sliding mode, the curve fitting chain is fixedly connected to the free end of the sunshade cloth, one end of the vertical telescopic rod is connected with the frame body, and the other end of the vertical telescopic rod is connected with the curve fitting chain. The sun-shading position and the sun-shading area can be automatically changed, different sun-shading requirements of people on the same window in a public environment can be met, and convenience is provided for window sun-shad