Abstract: The research progress of dissimilar metal welding technology between ODS alloy and low alloy steel was summarized and analyzed in the paper. The research status of friction welding, resistance welding and electron beam welding of ODS alloy and low alloy steels was mainly introduced in the paper, the microstructure, properties and oxide particles distribution of the welded joints under different welding methods were analyzed, the existing problems of various welding technology were summarized, and the causes and solutions of different problems were analyzed. The research direction of ODS alloy and low alloy steel welding in the future was summarized.