Aiming at the trend of miniaturization of inertial integrated navigation system in recent years, a novel miniaturized packaging technology for the miniature inertial integrated navigation system is designed in this paper. The device structure and packaging process involved in this technology are introduced. The corresponding extrusion heads have been specially designed, and the amount of extrusion that affects the final riveted joints has been carefully designed. The vibration impact test and finite element simulation analysis were carried out for the product after applying this technology. The results show that there is no failure of the riveted joint after vibration impact, and the results of finite element analysis show that the maximum displacement of the riveted joint edge is 0.01 mm, which determines that the riveted joint is firm and reliable. This miniaturized packaging technology is not only applied to inertial integrated products, but also applicable to products in other industries, and has high promotion value.