Abstract: This article suggests a new comprehensive method to select the vehicle-type based on both value-analysis of technical features and economic gains-analysis by means of microcomputer, It is to make quantative evaluation of every technical feature and function-value-degree of various being selected vehicle, to input the data of multiple factors in microcomputer, and to obtain the comparable coefficients of every vehicle-type based on mathematics model opration, then to grade comprehensively the economic gains in practical use feed-back. This method can raise the economic gains by 89 per cent and reduce the unit-transpart cost by 40 per cent at the same time.