This paper summarizes the research status of rotational tool used for friction stir welding, and analyzes the designed principle, advantages and disadvantages of each kind of tool.

• 系统地总结和分析了国外搅拌摩擦焊用搅拌头的研究发展现状,并指出了每种搅拌头的设计思想、作用和优缺点。