Gas protection welding machine with filtering device

The utility model relates to a gas protection welding machine with a filtering device. The gas protection welding machine comprises a welding machine case and a gas storage device connected with a case control device, wherein the other end of the gas storage device is connected with a welding gun by a pipeline; a gas inlet is formed in the side part of a shell of the welding machine case; a gas outlet is formed in the lower part of the shell of the case; one layer of shell is arranged outside the whole body of a gas filtering device; an exhausting motor is arranged at the upper part of the device; an exhausting opening of the exhausting motor is connected with the gas inlet formed in the side part of the shell; a pressing cover is arranged at the upper part of the gas filtering device and a vent hole is formed in the pressing cover; a gas outlet of the exhausting motor is communicated with the vent hole b. A dust filtering layer is arranged in a tank body of a gas sealing device. The gas protection welding machine has a scientific structure; workers can be protected when the gas protection welding machine works, and the existing technical problems are solved.