Photochemical Environmental Simulation Chamber is crafted from mirror-finished stainless steel and a FEP material membrane with a transmittance exceeding 93%, boasting a total volume of approximately 23m³. It is equipped with adjustable ultraviolet and visible light systems to replicate sunlight conditions. The chamber features an air circulation system, turbulence control devices, and a temperature and humidity control system, capable of mimicking environmental conditions within a range of 10-40°C and 0-95% relative humidity. Its system includes a precise sample injection automatic control, gas distribution system, zero air generator, and aerosol generation system to ensure accurate sampling and collection of various sample gases. It can be connected to an online monitoring system for air pollutants for real-time monitoring and analysis, as well as to other upgraded instruments.