Abstract: Austenitic stainless steel is widely used in deep water topsides, inspection of austenitic stainless steel weld is always a difficulty for ultrasonic method, as the development of phase array (hereafter named PAUT), the situation was highly improved due to the advantages of PAUT. And based on these advantages, this paper analysis the possible testing plan, and three blocks with artificial flaws are made and successfully demonstrate the effective of the test plan. Finally it summary some different between inspection of austenitic stainless steel weld and carbon steel welds, and also the matters need attention during the inspection process.