Lower ventilation and noise elimination single-layer sound insulation window

The utility model discloses a lower ventilation silencing single-layer sound insulation window which comprises upper glass, a first frame is fixedly connected to the outer surface of the upper glass, a third frame is movably connected to the left portion of the lower end of the first frame, a sixth frame is movably connected to the right portion of the lower end of the first frame, left glass is fixedly connected into the third frame, and right glass is fixedly connected into the sixth frame. Right glass is fixedly connected into the sixth frame, the ends, close to each other, of the sixth frame and the third frame are jointly and movably connected with a fifth frame, the lower end of the third frame and the lower end of the sixth frame are jointly and movably connected with a fourth frame, and a ventilation mechanism is fixedly connected into the fourth frame. The lower ventilation silencing single-layer sound insulation window is high in sound insulation efficiency, good in ventilation effect, high in stabi