Gas concentration analyzing device and measurement equipment thereof and analyzing method

The invention discloses measurement equipment for a gas concentration analyzing device, the gas concentration analyzing device, a gas concentration calibration method and analyzing method. The measurement equipment comprises a light source, an optical beam splitter, a measurement light pool, a measurement terminal detector and a reference terminal detector. The measurement light pool is used for storage of to-be-tested sample gas; the measurement terminal detector is used for measuring first light intensity of a first light beam passing through the measurement light pool, wherein the first light beam is formed by a light beam, emitted by a measurement light source, passing through the optical beam splitter. The reference terminal detector is used for measuring second light intensity of a second light beam, emitted by the light source, passing through the optical beam splitter. A functional relationship or a curvilinear relationship between the first light intensity and the second lightintensity is calculated