Welding nozzle and laser welding device

The utility model discloses a welding nozzle and a laser welding device, and the welding nozzle comprises a welding nozzle main body which comprises a fixed platform and a plurality of supporting columns, and the supporting columns are arranged along the periphery of the fixed platform at intervals; the air blowing module comprises an air blowing part, the air outlet end of the air blowing part is arranged between the two adjacent supporting columns and matched with the supporting columns, the dust removal module comprises a dust removal part, and the inlet end of the dust removal part is arranged between the two adjacent supporting columns and matched with the supporting columns. The supporting columns are arranged at intervals, so that the welding nozzle body is provided with a plurality of spaces communicated with the outside, a hollow structure is formed, a to-be-welded part is pressed through the supporting columns, on the basis that effective fixing is achieved, the hollow structure can avoid the proble