Discrete type active noise-reducing, ventilating and sound-insulating window

The invention discloses a discrete type active noise-reducing, ventilating and sound-insulating window structure. A window body is divided into an inner layer and an outer layer, each layer of the window consists of a casement window and a middle fixed window, and the fixed window can be divided into a plurality of discrete type active noise-control pipelines according to a noise-reducing requirement; a control system comprises a plurality of controllers, a plurality of reference microphones, a plurality of control sources and a plurality of error microphones; and the control sources are arranged in middle interlayer of each discrete type pipeline near to an indoor air vent, the reference microphones are arranged at each discrete type pipeline opening in the window which is near to an outdoor wind inlet, and the error microphones are arranged on a window frame which is near to the indoor air vent. The window can obtain 12dBA of newly-increased noise attenuation quantity under 200-800Hz while natural ventilati