Abstract: In order to solve the porosity problem of superalloy welds, ring laser beam welding equipment was used to perform ring laser beam welding and laser swing welding process tests on GH3625 solid solution strengthened superalloy plate with thickness of 4mm, which made the welding test plate meet the quality requirements of Class I weld. After the welding process evaluation, it is used for the welding of superalloy weldparts. The results of process test and production application show that: the laser deep penetration welding of superalloy is easy to produce porosity; Ring laser beam welding is one of the effective ways to solve the problem of porosity in laser deep penetration welding. The effect of ring laser beam welding and laser swing welding is better.