The invention relates to an air humidification purifier. An air supplying hole of an air delivery pump is formed in a shell, and is opposite against a porous filter material below the air supplying hole, an air outlet is communicated with the lower part of the porous filter material, and a sprinkler head is connected in the shell, is opposite against the porous filter material and is connected with a water pump. The air humidification purifier overcomes the defects that a plurality of particulate matters with small particle sizes can not be filtered to cause that the purifying efficiency is greatly reduced, a filter membrane is frequently cleaned, and the like in the existing air purifying device. According to the air humidification purifier, water is continuously or periodically added in the filter material in the air purifying process to ensure that the filter material has certain humidity, and thus the surface tension of the filter material is greatly enhanced, the great absorption capacity to various fine particulate matters in air is obtained so that the full purifying function is achieved, fine dust particles and other pollution sources can be filtered, and the purifying efficiency is greatly improved. The air humidification purifier is simple in structure and remarkable in effect.