Gas compression device for environmental gas nanoparticle detection

The utility model relates to a gas compression device for environmental gas nanoparticle detection. The gas compression device comprises a shell, a compression cavity used for containing gas is formed in the shell. The shell is provided with an airflow channel used for being connected with an external compression pump. The compression cavity is communicated with the external environment of the shell through the airflow channel; the shell is also provided with a light channel; gas is pumped into the compression cavity by an external compression pump through the gas flow channel, and the gas is quickly released through the gas flow channel when the gas is compressed to a target state, so that invisible particles with the minimum diameter of 0.002 mu m in the sample gas are amplified into detectable small water drops with the diameter range of 10 mu m-20 mu m; the particle size amplification of nano particles in environmental gas is realized, a laser source is emitted into a light channel for detection, the numb