The utility model discloses an atmospheric particle collecting device. Collection box, wherein the collection box comprises a collection area, a drying area, a metering area, a collection area and anair exhaust area which are sequentially communicated from front to back; a first collecting head and a second collecting head are fixed on the front side wall of the collecting box at intervals; the air outlet end of the first collecting head is connected with a first pipeline; the first pipeline extends into the collection area; a first control valve is arranged on the first pipeline; the air outlet end of the second collecting head is connected with a second pipeline; the second pipeline extends into the collection area, a second control valve is arranged on the second pipeline, a drying mechanism is arranged in the drying area, a gas flow meter is fixed in the metering area, a gas outlet of the gas flow meter is communicated with the collection area, a plurality of springs are fixed atthe bottom of the collection area, and the upper ends of the springs are connected with a mounting plate; the device has the advantages of stable operation, consideration of various particles and guarantee of accurate subsequent determination results.