Portable flue gas analyzer

The utility model relates to the technical field of flue gas analyzing equipment, in particular to a portable flue gas analyzer, which solves the problems in the prior art that an existing flue gas analyzer is large in size and complicated in structure, and has shortcomings of zero drift, cross interference and large measurement error which are caused by the principle of a chemical battery arranged in an electrochemical sensor and the sensor is short in service life. The technical scheme includes that the portable flue gas analyzer comprises a central processing unit, a sampling probe, a sampling pump, an ultraviolet light source, a cylindrical quartz cell and a spectral analyzer, wherein the sampling probe is connected with the sampling pump, an outlet of the sampling pump is communicated with the cylindrical quartz cell, the ultraviolet light source, the cylindrical quartz cell and the spectral analyzer are connected through optical fibers, and the spectral analyzer is connected with the central processing