For improving alignment performance of dynamic alignment for inertial navigation system (INS) of precision guided weapons, analyze the related technology. This paper summarizes the development status of domestic and foreign in-motion alignment and in-flight alignment technologies, and discusses the development trend of the dynamic alignment technologies for INS. The research results show that effectively realize precision guided weapon dynamic alignment by further improvement of filtering methods, seeking for more effective flexure deformation and lever arm effect processing methods, making full use of other navigation information for auxiliary alignment, and combining specific weapon platform maneuvering characteristics.