The gas sampling preprocessing system is a key link connecting the gas sampling point and the analytical instrument, aimed at removing impurities (such as particulate matter, moisture, corrosive gases, condensate, etc.) in the original gas sample that interfere with the analysis results or damage the instrument, while ensuring the representativeness, stability, and integrity of the sample during transmission, ensuring that the analytical instrument can operate accurately, reliably, and for a long time, and provide real and effective data. This system is widely used in environmental monitoring, industrial process control, safety detection, scientific research experiments and other fields, and is an important component of gas analysis processes.