Regardless of China's economy rising is a ＂threat＂ or an ＂opportunity＂, this study attempted to think out of the historical framework to create a new model of cross-strait relations and to examine the impact of China’s economy rising on the Asia-Pacific regional security. This study employed the future triangle to identify the six plausible futures of cross-strait relations, including closely, cultural alienation, mutually beneficial economic interdependence, political and military confrontation, maintaining the current status quo and approaching the imagined communities. Those drivers and structural resistances also were illustrated in each plausible future. Scenarios analysis was employed to examine how the influence of China economy’s rising to the Asia-Pacific regional security. Four scenarios were illustrated, including the desirable future status of the vague but balanced relations, emerging the new hegemony and the multinational political and economic elite alliances, the separatist crisis, and to transcend towards the new Pacific century. This study finally proposed four strategies to approach the new Pacific century, including to conversion of the governmental bureaucracy and planning think patterns, to respect the multicultural identity and the construction of Asian values, to design the multiple and deeper level dialogue within local NGOs and building the cross-regional alliance, as well as setting the plausible vision and strategy to change the future.