Frictionstirrivetin（gFSR）hasachievedremarkable success in the joining and processing of aluminum alloys and steels. In this paper,the classification and mechanism of FSR are summarized. The joint types,the microstructure transformation of joint area,the kinds and influence factors of interfacial inter-metallic compounds and the failure mode of the FSR for alu-minum alloy and steel were analyzed and summarized. A great deal of research indicated that based on the microstructure transformation,the joint area can be divided into anchoring zone,thermal-mechanical affected zone and heat affected zone.Due to the friction heating,mechanical reactions occurred at the joining interface,it is easy to generate intermetallic compounds FexAl（yx