宮古島位居琉球群島西南，雖是面積不及160平方公里的珊瑚礁群所構成的偏僻島嶼，卻因掌控著東海出口、鄰近釣魚台，以及足以俯瞰台海動向的優越地位，在東北亞的戰略價值上堪稱十分重要。冷戰時期，由於受到客觀形勢的制約，圍繞在東海周邊的中國與日本尚少直接衝突，以是宮古島亦相對冷清而乏人問津；惟自冷戰終結以來，中、日兩國不約而同競相争逐海上，大小衝突時有所聞，不僅牽動東北亞的安定與和平，也連帶引發了世人對置身火線的宮古島重新投以注目的眼光。本文的目的即在藉由對於中、日兩國角力過程的觀察，再度檢視宮古島在東北亞的戰略地位，以便能對此一相關議題的討論提供些許的參考與助益。

The Miyakojima is located among the southwest of Ryukyu Islands. It is a remote island in the area of less than 160 square kilometers of coral reefs. Due to its strategically location and enormous marine interests under it, it often grows international controversy since the 90 's. The purpose of this article is to re-examining Miyakojima in the context of Northeast Asia. It also intends to offer suggestion for future research from the viewpoint of International Affairs.