The invention provides a comprehensive analysis platform having a multifunctional SF6 detection technology and a method thereof. The platform comprises a gas detection part and a gas recovery part. The gas detection part comprises an infrared light source (1), a chopper (2), a light cutting motor (3), measure air chambers (4), a detector (5), and a signal processing and outputting system (9). Thelight cutting motor (3) is connected with the chopper (2), the infrared light source (1) is arranged at the front of the chopper (2), the chopper (2) is arranged at the front of the measure air chamber (4), the measure air chamber (4) is arranged at the front of the detector (5), and the detector (5) is connected with the signal processing and outputting system (9). A micro flow infrared gas sensor is arranged between two air chambers, gas concentration can be detected through expansion difference of two air chambers, a gas detecting pipeline and a gas recovery pipeline are subjected to integrated optimization design, and automatic quantitative determination and recovery are achieved.