Aerosol particulate matter collecting device and method

The invention provides an aerosol particulate matter collecting device and method. The aerosol particulate matter collecting device comprises a rotating part, an absorption cell and a driving part, the rotating part is rotationally connected into the container, the gas sample inlet and the gas sample outlet are communicated with the space in the rotating part, and a filter screen is arranged on the outer side of the rotating part; the absorption cell is arranged in the container, and absorption liquid is arranged in the absorption cell. According to the invention, the gas sample is input into the container, the gas sample can pass through the filter screen and enter the space inside the rotating part, and due to the aperture of the filter screen, especially the actual aperture caused by rotation of the filter screen, aerosol particles smaller than the aperture can be blocked on the filter screen, so that the gas sample can enter the rotating part; when the part, where the aerosol particles are attached, of th