Argon filling rectifying device for argon arc welding

The invention provides an argon arc welding argon filling rectifying device which comprises a rectifying body arranged at one end of a pipeline and at least partially inserted into the pipeline. A plurality of rectifying holes are formed in the side, facing the interior of the pipeline, of the rectifying cavity; the gas inlet connector is arranged on the side, back on to the interior of the pipeline, of the rectification body, communicates with the rectification cavity and is used for being connected with a gas inlet assembly outputting argon. And argon in the rectifying cavity flows into the pipeline through the rectifying holes. The argon-arc welding argon filling rectifying device connected with the gas inlet assembly is arranged at the end of the pipeline, so that argon enters the pipeline after being dispersed through the rectifying holes in the end of the rectifying cavity, the argon can be prevented from being gathered in a part of areas, the argon is evenly distributed in the pipeline, and therefore t