Air self-purifier is a kind of air purifying unit which provides local clean working environment. It is composed of primary effect, fan, high efficiency filter and static pressure box. The utility model has the advantages of simple structure and convenient use, and is the best ideal purification equipment for simple and small area air purification. The air self-cleaner is divided into two types: fixed ZJ and mobile YZJ, and the outlet cleanliness can reach 100 grade. Used in the aseptic workshop of food, beverage, pharmaceutical, brewing, wine making and other enterprises