On March 23 1996, the citizens of Taiwan selected a relative majority of all citizens recognized national leader through a referendum election, since Taiwan's democratization has officially entered into a new milestone. In the development of democratization from 1996 to 2011, Taiwan had have three democratically elected president, They are: "Mr. Lee Teng-hui"(the first democratically elected president in 1996), "Mr.Chen Shui-bian" (the Second elected president of another political party in 2000) and "Mr. Ma Ying-jeou" (also different political parties from the former was elected in 2008), those leaded Taiwan to a peaceful manner to complete the transfer of sovereignty. Taiwan is also towards democratization and national development, citizens have the right to determine the national leaders and the influence of the country in the future. In cross-strait relations and national status, the two formers and the current President have their pursuit of the goal so that they affect the development of cross-strait relations of those in power in the different periods of the national status. As opposed Taiwan's domestic politics was changed by the rotation of those in power of Taiwan's internal national status. CCP’s policy toward Taiwan is relatively stable since the reform and opening up the spirit of the ultimate reunification of Taiwan remain unchanged. Therefore, this paper will assume that the CCP's policy toward Taiwan policy guidelines basically unchanged, served as the impact of the democratically elected president of national status for Taiwan's national identity changes, as well as the Taiwan's national identity change on cross-strait relations.