Ultra-silence kitchen fume purifier

The ultra-silence kitchen fume purifier comprises an indoor purification box arranged on the back side, the upper end of the front side of the indoor purification box is fixedly connected with a fume suction hood, the fume suction hood is arranged corresponding to the upper portion of a cooking bench, and the upper end of the rear side of the fume suction hood is communicated with the indoor purification box; the upper end of the rear side of the indoor purification box is fixedly connected with an outdoor secondary purification box through an exhaust hose, the exhaust hose penetrates through a wall body and extends to the outdoors, the upper end of the outdoor secondary purification box is fixedly connected with an exhaust fan, an electric air exhaust fan is installed in the exhaust fan, and the arranged electric air exhaust fan operates outdoors; negative pressure is formed at the upper end of the outdoor secondary purification box, oil smoke is discharged, the oil smoke is removed through the arranged filt