ECFA was signed in "Chong Ch'ing" of China on April 29th, 2010. The contract is a keystone to a win-win situation with which the normalization and institutionalizations are promoted, and it also means another step forward to the cross-strait peace development. In other words, the agreement on ECFA indicates the new milestone of the cross-strait relationship; what's more, it shows positive significance of stable developments and regional safety brought out under the course of cross-strait peace development. However, the cross-strait trade strategy promoted by the Ma government was boycotted by DPP in Taiwan as political means aiming at the election of the five municipalities. Through the opposition to ECFA, the cross-strait strategy regulated by the administration party and the economic expansion path of R.O.C, DPP tried in attempt to gain benefits in elections by winning the hearts of the deep green voters. After the signature of cross-strait ECFA, the premier concerns in the process of future cross-strait negotiations will be the internal and external affects and pressures, which form the uncertain factors of the political negotiations .Therefore, to run the political negotiation smoothly, these uncertain factors should be confronted with importantly and to create the solution.