PM2.5 detection device

The utility model discloses a PM2.5 detection device which comprises a sealed detection space, a detection table used for placing a plurality of PM2.5 sensors is arranged in the sealed detection space, a smoke uniformizing fan and a smoke generator are further arranged in the sealed detection space, the smoke uniformizing fan supplies air towards the plurality of PM2.5 sensors, and the PM2.5 detection device further comprises a data recording device. The data recording device is connected with the plurality of PM2.5 sensors through data lines, the data lines are connected with the PM2.5 sensors through first through holes formed in the sealed detection space, the plurality of PM2.5 sensors are firstly placed on the detection table, the plurality of PM2.5 sensors are connected to the plurality of data recording devices through the data lines, then the smoke uniformizing fan and the smoke generator are turned on, and the PM2.5 sensors are connected with the plurality of PM2.5 sensors through the data lines. Ena