Mouth-nose inhalation exposure system and aerosol concentration control method

The invention relates to the field of mouth-nose inhalation exposure systems for animal experiments, in particular to a mouth-nose inhalation exposure system and an aerosol concentration control method. An oral-nasal inhalation exposure system comprises: a fixator for accommodating an experimental animal; the generator is used for generating aerosol from the test medicine; the exposure cabin is provided with a hollow cavity and comprises a gas inlet, a sampling port, a tail gas port, an adjusting port and a plurality of fixing ports which are communicated with the hollow cavity, the gas inlet is used for being communicated with the generator, the sampling port is used for being selectively communicated with a sampler to measure the concentration of the hollow cavity, the tail gas port is used for discharging tail gas, and the adjusting port is used for adjusting the concentration of the hollow cavity. The plurality of fixing ports are respectively communicated with the fixer; and the control device is used fo