According to the technological characteristics of all-position automatic welding of superalloy conduit,the causes of common welding defects such as non-fusion,non-penetration and weld depression were analyzed,the corresponding welding process plan and the measures to avoid welding defects were formulated,the process test was carried out to verify and the product was welded in kind,all welds were subjected to non-destructive tests（appearance inspection,endoscopy inspection,X-ray inspection,hydraulic airtight test）and destructive test（mechanical performance test and metallographic analysis）,and the quality of welds met the corresponding standard requirements,guaranteed product quality and improved workshop production efficiency. It is an inevitable trend to replace the traditional manual argon arc welding process for all-position automatic welding of superalloy conduits.