Abstract: In order to reduce the mechanical vibration of airborne equipment, excellent performance of the mounting frame can ensure normal work security of the equipment. Based on the structure of its form and working conditions, the bracket parametric finite element model of the accurate numerical analysis is established by using ANSYS to obtain the modal frequency for its overall dynamic characteristics and structure optimization design. The experiments show that this method is correct, and can offer the overall kinetics characteristic analysis and structural optimization for design reference.