Laser gas purification system and solid laser

The utility model provides a laser gas purification system and a solid laser. The gas purification system comprises an inert gas source, a gas purification module, a first gas path and a second gas path, the gas inlet end of the gas purification module is connected with an inert gas source and is used for purifying inert gas input into a laser cabin of the laser; the gas outlet end of the gas purification module is respectively connected with the first gas path and the second gas path; the output end of the first gas path is connected with the gas inlet of the laser bin and is used for introducing protective inert gas into the laser bin; the output end of the second gas path is arranged on the outer side of a light-emitting window of the laser bin, inert gas blown out of the output end of the second gas path blows through the outer side surface of the light-emitting window and is used for forming a protective gas curtain on the outer side surface of the light-emitting window, and therefore impurity particles