To optimize the structural design of aluminum alloy aerial work suspended platforms, parametric finite element models of suspended platforms with different configurations are constructed based on the ANSYS platform, and static analyses are conducted. Through the analysis results, the maximum number of configurations of aluminum alloy suspended platform combination modules is quantified. On this basis, a parametric sensitivity analysis is conducted on weak components identified by static analysis, focusing on the mechanism by which sectional parameters affect the overall stiffness and strength of the platform. Research results show that the sectional parameters of the reinforcing plate have a significant regulatory effect on the overall load-bearing performance of the suspended platform and there is an optimal solution. The research results can provide theoretical basis and technical support for modular design and engineering safety evaluation of aluminum alloy suspended platforms.