The ancestors of Wang Geon(王建) settled in Songak-gun(松嶽郡) area in the late Silla Dynasty and developed as a local power family(豪族). Wang Ryung(王隆), the father of WangGeon, obeyed Gung Ye(弓裔) and WangGeon also appeared on the stage of history. At the time, Wang Ryung’s the sphere of influence did not greatly deviate the whole Songak-gun. After WangRyung started to obey GungYe, WangGeon grew up while receiving the trust of GongYe. The regionally based core of WangGeon at the time of Goryeo foundation was Songak-gun and the surrounding Gaeseong-gun(開 城郡), and Naju(羅州) was also an important regional base. In addition, WangGeon also had some regional foundations throughout the country, including Cheorwon(鐵圓), which is the capital of Taebong(泰封). However, it is hard to say that the power of WangGeon at the time of Goryeo foundation overpowered the power of Gung Ye. The basis of Wang Geon at the time of foundation cannot be determined with maritime powers. Taejo(太祖) moved the capital for political stability shortly after foundation. The reason for transfer of capital to Gaegyeong(開京) was because it was the base of the Wang Geon power and because it was once the capital during the Gung Ye period, the facilities that were created at the time were available for use. Taejo transferred the capital to Songak(松嶽) was not because it was a great location based on the theory of PungSu(風水地理說). The theory of PungSu was emphasized during the process of justifying the status of capital change after transfer of the capital. After the transfer of the capital, it became the center of Goryeo’s national operation. Afterwards, as the territory of Goryeo expanded, it was generally located in the center of Goryeo territory. Accordingly, it was possible to operate the country more efficiently than the precious dynasty.