Wearable device for collecting particulate matters in inhaled air and exhaled air

The invention provides a wearable device for collecting particulate matters in inhaled air and exhaled air, and the wearable device comprises a mask body which is provided with a first circular hole and a second circular hole; the exhaled air collecting component comprises a draught fan body, a buckle, an atmosphere sampling film and a transparent resin gasket, the draught fan body enables air to flow from the interior of the mask to the outside, the draught fan body is installed at the first circular hole, and an annular buckle groove is formed in the inner side of the draught fan body; the atmosphere sampling film and the transparent resin gasket are sequentially stored by the buckle and then are buckled in the buckle groove; the air suction and supply component comprises a fan with an air exhaust function and is mounted at the second circular hole, and air flows from the outside to the inside of the mask. The wearable device for simultaneously collecting the particulate matters in the inhaled air and the e