In order to meet the needs of diversified and intelligent use in cloud computing invoca-tion,multi-model general computing and secondary packaging when domestic civil transport aircraft carry out release safety assessment and operational performance verification,this paper proposes a pre-and post-processing architecture for the computation kernel of the aircraft customized performance soft-ware,which unifies the processes and methods of pre-and post-processing of the performance simula-tion in order to be decoupled from the aircraft performance business algorithms and adapt to different performance simulation application scenarios.Through pre-processing to parse,translate and prepare the computation task,through post-processing to functionalize the output of the computation result and through calling the business function algorithm model to complete the corresponding simulation com-putation,it improves the robustness and stability of the system and achieves the easy-to-use and easy-to-maintain.Practical application proves that this architecture can provide strong support for the tech-nical reserve of domestic civil aircraft performance analysis system in terms of analysis efficiency im-provement,algorithm optimization implementation and model correctness verification.In addition,the design concept and implementation method of the architecture provide new ideas for the development of future aircraft customized performance software,which is expected to be more widely used in the aviation field.