Reagent dust collecting filter device

The utility model discloses a reagent dust collecting filter device, which is provided with a shell, a filter piece and a pumping device, wherein the filter piece is arranged on the shell and is used to filter dust, and the pumping device is arranged in the shell and inhales air. A first and a second action spaces are formed through holding spaces of the shell, air in the first action space is pumped by adopting the pumping device to be discharged into the second action space, and the pumping device is not directly connected with an air outlet of the shell, thereby being capable of reducing the noise produced by operation of the pumping device besides, being further capable of preventing drug fine grains which are not filter completely from rapidly diffusing, and leading using spaces to obtain better air quality. Simultaneously, the reagent dust collecting filter device occupies smaller space, and further increases operation convenience.