Multi-stage purification air purifier

The invention relates to a multi-stage purification air purifier, and relates to the field of air purification. According to the multi-stage purification air purifier, the filter screen can be cleaned in real time, and the purification efficiency stability is guaranteed. Comprising a base, the base is fixedly connected with a fixing frame, the collecting frame is provided with a collecting channel for collecting dust particles, a collecting opening is connected with the collecting channel, the fixing frame is fixedly connected with a filter screen, the filter screen is in contact fit with the collecting channel, and the fixing frame is fixedly connected with a filter element. Through cooperation of the fan blades and the filter element, air is filtered, meanwhile, the rotating frame rotates to drive the cleaning brush to clean particulate matter impurities on the filter screen on the outer side in real time, the original filtering efficiency of the filter screen can be kept, the situation that the filtering r