To enhance the transformation of technology achievements into real productivity thus to achieve innovation-driven development, it is necessary to measure the comprehensive value of technology achievements accurately. But there are rare researches on comprehensive evaluation of given technological achievements. An evaluation system is proposed which is based on “Technology Efficiency”, and then weights evaluating indicators with two methods: rank correlation analysis and logarithmic function method. Empirical analysis shows that the system could measure comprehensive value of technology achievements effectively, however, there exists difference between the results from the former two weighting methods. It is concluded with an analysis of reason of the foresaid difference, and application advices are given due to the two weighting methods.