Gas Analysis System

The invention discloses a gas analysis system. The gas analysis system comprises a detecting rod, a detection box and signal processing equipment, wherein one end of the detecting rod is inserted into and fixed in a measurement channel, and is used for collecting to-be-detected gas in the measurement channel; the detection box is connected with the other end of the detecting rod by a flexible pipeline, the detection box comprises a multi-reflection gas chamber, and the air chamber is suitable for enabling an optical signal entering the gas chamber to be reflected for multiple times and to be transmitted out; the signal processing equipment is remotely connected with the gas chamber by a signal line, is suitable for driving a light source to transmit the optical signal to the gas chamber and receiving an electrical signal transmitted out from the gas chamber.