In China, there is no report about the sustainability and robustness of social pension insurance system. The Annual report of the Board of Trustees of the Federal Old-Age and Survivors Insurance and Disability Insurance Trust Funds (OASDI report)provides an authoritative paradigm. In this paper, we investigate technical characteristic of the OASDI report. We mainly focus on the demographic, economic, and program-specific assumptions and stochastic methods of the OASDI report. Then we discuss the possible enl...