Abstract:The laminated structure part has achieved special attitude for its high damage tolerance, and become a type of new application of SPF/DB technology. The laminated “I” beam of titanium alloy can be manufactured by SPF/DB combined technology as the part is fist superplastic formed and then is diffusion bonded to an integrated structure. The size, microstructure and property of the part can conform to design requirements for application. But more research must be carried out to optimize the technical parameters.