Detection and analysis device capable of detecting gas flowing

The utility model relates to a detection and analysis device capable of detecting gas flowing. The detection and analysis device is connected with a gas storage device, and comprises a sampling pipeline as well as a sampling valve, a control valve and a conveying valve which are arranged on the sampling pipeline, wherein a pipeline in front of the part, which is connected with an analyzer, of the sampling pipeline is provided with a flow alarming mechanism for detecting a gas flow size. Compared with the prior art, the detection and analysis device can adopt measures in time when a flow alarm is sent, and whether the working states of the analyzer and a pre-treatment system are normal or not is judged, and unqualified products are not output, so that unnecessary loss is avoided; and furthermore, the modification cost is relatively low so that the possible hidden dangers can be conveniently solved.