A welding torch (3, 3A) comprising: a non-consumable electrode; a collet into which the non-consumable electrode is inserted; and a torch body including: a flow path forming portion that forms a shielding gas flow path (51, 52) configured for an inert gas to flow into, and an outer gas flow path communicating with the shielding gas flow path, a first gas lens configured to straighten the inert gas in the shielding gas flow path (51, 52) and blow the inert gas out as a shielding gas, a second gas lens configured to straighten the inert gas in the outer gas flow path and blow the inert gas out as an outer gas, characterized by: a sleeve that holds the collet, a shielding gas nozzle forming a shielding gas guiding space around a distal end of the non-consumable electrode, the distal end extending from the collet, and an outer gas nozzle forming an outer gas guiding space around the shielding gas nozzle; wherein the flow path forming portion forms the shielding gas flow path (51, 52) around the sleeve, the first gas lens is disposed to separate the shielding gas flow path (51, 52) from the shielding gas guiding space, and the second gas lens is disposed to separate the outer gas flow path from the outer gas guiding space. a non-consumable electrode; a collet into which the non-consumable electrode is inserted; and a torch body including: a flow path forming portion that forms a shielding gas flow path (51, 52) configured for an inert gas to flow into, and an outer gas flow path communicating with the shielding gas flow path, a first gas lens configured to straighten the inert gas in the shielding gas flow path (51, 52) and blow the inert gas out as a shielding gas, a second gas lens configured to straighten the inert gas in the outer gas flow path and blow the inert gas out as an outer gas, characterized by: a sleeve that holds the collet, a shielding gas nozzle forming a shielding gas guiding space around a distal end of the non-consumable electrode, the distal end extending from the collet, and an outer gas nozzle forming an outer gas guiding space around the shielding gas nozzle; wherein the flow path forming portion forms the shielding gas flow path (51, 52) around the sleeve, the first gas lens is disposed to separate the shielding gas flow path (51, 52) from the shielding gas guiding space, and the second gas lens is disposed to separate the outer gas flow path from the outer gas guiding space. a flow path forming portion that forms a shielding gas flow path (51, 52) configured for an inert gas to flow into, and an outer gas flow path communicating with the shielding gas flow path, a first gas lens configured to straighten the inert gas in the shielding gas flow path (51, 52) and blow the inert gas out as a shielding gas, a second gas lens configured to straighten the inert gas in the outer gas flow path and blow the inert gas out as an outer gas, characterized by: a sleeve that holds the collet, a shielding gas nozzle forming a shielding gas guiding space around a distal end of the non-consumable electrode, the distal end extending from the collet, and an outer gas nozzle forming an outer gas guiding space around the shielding gas nozzle; wherein the flow path forming portion forms the shielding gas flow path (51, 52) around the sleeve, the first gas lens is disposed to separate the shielding gas flow path (51, 52) from the shielding gas guiding space, and the second gas lens is disposed to separate the outer gas flow path from the outer gas guiding space. a sleeve that holds the collet, a shielding gas nozzle forming a shielding gas guiding space around a distal end of the non-consumable electrode, the distal end extending from the collet, and an outer gas nozzle forming an outer gas guiding space around the shielding gas nozzle; wherein the flow path forming portion forms the shielding gas flow path (51, 52) around the sleeve, the first gas lens is disposed to separate the shielding gas flow path (51, 52) from the shielding gas guiding space, and the second gas lens is disposed to separate the outer gas flow path from the outer gas guiding space.