固定比率法因为需要选择某一年作为研究基期假定该年地下经济规模为零,将该年度的货币比率K值作为K0代入现金比率模型进行测算,所以存在一定的缺陷。并且,现金比率模型一般基于地下经济全部采用现金支付的假设条件下,所以会对地下经济规模造成低估。本文基于固定比率法的基本模型进行部分修正,估算我国从1994年到2013年的地下经济规模。 Fixed ratio method because of the need to select a year as the research base Suppose the year the scale of underground economy is zero, the annual rate of K as K0 into the cash ratio model to calculate, so there are some shortcomings. Moreover, the cash ratio model is generally based on the assumption that the underground economy will be fully paid in cash, thereby undermining the underground economy. In this paper, partial revision of the basic model based on fixed ratio method is used to estimate the underground economic scale of our country from 1994 to 2013.