In recent years, Taiwan has experienced various reforms such as political democratization, economic liberalization and social pluralism. Therefore, Taiwan is now at variance with its transformation and growth in both form and essence in former years. However, how to solve the issue of national sovereignty in relations between Taiwan and China to the satisfaction of both sides of the Taiwan Strait exists in various views and anticipation both internationally and domestically-but especially within Taiwan. For my own concern and to maintain local interest, the Taiwanese people should first engage in rational thinking to seek a solution for this issue; then, Taiwan and China should together seek a solution. The purpose of this article is to show the feasibility of formulating a plan to solve the issue of national sovereignty on both sides of the Taiwan Strait by means of rational thinking, within the scope of reality, regarding both the Mainland question and the Taiwan problem.