Sound insulation ventilating window

The invention discloses a sound insulation ventilating window. The sound insulation ventilating window comprises an external window (2) with an air inlet (1), an internal window (4) with an air outlet (3), and a muffling cavity body (5) which is positioned between the internal window (4) and the external window (2), and connected with the external window (2) and the internal window (4); louver muffling sheets (6) controlled by a motor are suspended inside the muffling cavity body (5); and the louver muffling sheets (6) are rotated or gathered under the action of the motor. The sound insulation ventilating window can stop low frequency band noises of which the frequency is lower than 500Hz so as to further weaken the noises from the outside of the window to the inside of the window; meanwhile, the ventilating performance of the sound insulation ventilating window can be guaranteed; the daylighting effect of the sound insulation ventilating window is better, the requirements of indoor noise reduction, heat insulation and daylighting of people can be met, and the structure is simple.