Systematic and scientific evaluation index system is the basis for accurate assessment of technological achievement values, and on the basis of theoretical research, this paper constructs the index system and carries out an empirical study of the influencing factors of technological achievement values based on the Hedonic Price Model. The study result shows that the technical level and economic benefits of technological achievements are positively correlated with their prices, and legal status has a weak explanatory capability to the value of technological achievements. Furthermore，the technical level and legal status somewhat strengthens the relationship between economic benefits and technological achievement values. Due to this dual impact of technical level and legal status on economic benefits and technological achievement values, the technical level and legal status are quasi-moderating variables in statistical terms. Finally, the paper puts forward some countermeasures and suggestions to perfect the value evaluation index system of technological achievements.