This study attempts to create a comprehensive evaluation index Score that surpasses Tobin’s Q, which is used in many previous studies as a proxy variable for corporate value. We calculated the principal component score (Score) using a principal component analysis of 10 indicators picked from the five perspectives of corporate profitability, safety, growth, efficiency, and sociability, thereafter we conducted a regression analysis using Tobin’s Q and Score as the explained variables, respectively. The results of the analysis indicated that the freedom-adjusted R-squared was approximately 0.3 for the model adopting Tobin’s Q and approximately 0.5 for the model adopting Score, indicating that Score is an excellent indicator for measuring corporate value.