Abstract: With the increasingly stringent demand for mobility and rapid deployment of modern equipment, the weight problem of containers has become a key factor restricting the airlift capability. In this paper, for the container carrying high-frequency band antenna radar, its structural characteristics and the problem of high proportion of redundant mass are analyzed, and a weight reduction design and strength stiffness simulation analysis method is proposed. The weight reduction target is realized by reducing the thickness of the rectangular tube and removing the structure with excessive safety redundancy, and the new large diagonal brace structure is added for directional reinforcement to meet the stiffness demand. The container skeleton structure and load model are established, and static and modal analyses are conducted. The analysis results show that the container skeleton structure after weight reduction and reinforcement meets the stiffness requirements while reducing the weight by 172 kg, the maximum value of deformation is reduced from 13.739 mm to 9.132 mm, the stress distribution is more uniform, and the bottom skeleton stress is reduced by 8.04%. In addition, modal analysis shows that the reinforced container skeleton structure increases the intrinsic frequency by 16.2%, the torsional stiffness and bending stiffness are synergistically increased, the axial swing is effectively suppressed, and the dynamic characteristics of the structure are significantly improved.