By comparing and analyzing the available welding materials for austenitic heat-resistant steel SA-213TP310HCbN,it is considered that ERNi Cr-3 is the best choice for welding SA-213TP310HCbN. The performance of welded joints obtained by welding SA-213TP310HCbN with ERNi Cr-3 is tested,and the application of these welded joints is analyzed. It is considered that the room temperature properties of welded joints of welding SA-213TP310HCbN with ERNi Cr-3 can meet the requirements of welding procedure qualification and test specimen inspection standards,and the short-term tensile properties of welded joints at a high temperature can meet the requirements of base metal and engineering applications.