Abstract This thesis is mainly to analyze China¡¦s development of sea power. There is always entangled relationship between the sea power and the national power. After the reforming and opening-up policy, China begin the development of sea power strategy, The motivation is to safeguard the interests of their national development and security. The economic development and demand for petroleum import. Since China¡¦s positively increased its maritime activities, and it will make huge impact to Asian-Pacific area. Keywords: Sea Power, reforming and opening-up policy, sea power strategy