Numerical simulation on the static and dynamic characteristics of the rigid base has been conducted based on finite element analysis (FEA) to verify the reliability and safety of the rigid base of the designed marine diesel generator set. The modeling of the components and BOM assembly is completed by using the NX11.0 software integrated in the Teamcenter platform, according to the schematic diagram of the rigid base from the selected design. After simplifying the component features, the BOM assembly is imported into FEA software for static and dynamic modal simulations of the rigid base. The calculation results show that the static strength and stiffness of the designed rigid base meet the operational requirements, and the first six natural frequencies are much higher than the external excitation frequency. There will be no resonance phenomena, and the dynamic strength and the stiffness of the structure are reliable, verifying the rationality of the selected design. It allows for the early evaluation and prediction of the reliability and safety of the structural performance of the rigid base. It provides theoretical support for subsequent product processing and manufacturing and offers direction for further optimization of the product design.