Through ¡§Economic Value Added¡¨ (EVA) approach, this study tries to observe the correlation between formation process of king stocks and their market prices. We hope to provide a useful tool to investors, which helps to realize value of king stocks and conditions of finding king stocks among numerous of listed companies, in order to make investment decisions efficiently and more precisely, and to obtain a good margin of profit. We gather financial information of those listed companies, which they had ever deemed as king stocks between 1992 and 2011. They basically have some features in common, i.e. companies with positive prospects, high market price, and newly listed. In this research, we utilize WACC, MV, COV and FGV to analyze EVA of king stocks, and find out the following empirical results: 1.When WACC of a king stock trends up in the long-run, it has a greater opportunity to improve and trigger COV trending up as well. 2.When COV of a king stock trends up, it brings stable performances of MV continuously. 3.FGV has a positive correlation with market price. When FGV of a king stock trends up, it triggers its market price to go up. In this research, we see that when MV and COV are convergent, we¡¦re able to use FGV to anticipate future trend of the stock. We also expect this study further facilitates king-stock companies themselves to set up workable market price stabilizing plans and select the best timing for stock buybacks. Keywords: King Stock, EVA, WACC, MV, COV, FGV, Stock Buybacks.