On the basis of present competitiveness evaluation index of commercial banks,  Commercial Bank's competitiveness evaluation index system are established  comprehensively and quantitatively, which have more the information without influencing the indexes correlation through Principal Component Analysis. The features and innovations of this paper are as follows: firstly, this paper comprehensively studies the state-owned commercial banks' competitiveness in two ways of actual competitive strength and potential competitive strength. Secondly, the selected index system with fewer indexes can reflect the total initial data through principal component analysis. The selected index system reduces the loss degree of original indexes information and avoids some effects that the correlation between indexes imposes on later evaluation. Finally, through OBLIMIN Oblique Rotation, we get several factors that remarkably influence comprehensive competitiveness, so that the stateowned commercial banks could improve their own competitiveness pointedly. From the view of demonstration, this paper finds out major factors which influence the competition of the stateowned commercial banks, such as, development ability, innovation achievements and so on, and provides them with some practical references and help.