Abstract: With the increasingly stringent demand for mobility and rapid deployment of modern military equipment, the weight problem of special containers has become a key factor restricting the airlift capability. In this paper, for the special 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 and 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 results show that the container skeleton structure after weight reduction and reinforcement meets the stiffness requirements while reducing the weight by 172kg, the maximum value of deformation is reduced from 13.73mm to 9.13mm, the stress distribution is more uniform, the top side moment tube stress is reduced by 10.07%, and the bottom skeleton stress is reduced by 18.84%. 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.