1. The spirit of the naval defense is mobile rather than static, harassment-type operations, to attack the enemy's armed forces and sea lines of communication, which is the best means to compete for the sea.2. PRC Navy of ”active defense” strategic thinking, which the strategic flexibility is integrated offensive and defense. To ensure that the mobile operations in the vast waters of the sea and mutual support battlefield between land and sea. Shaping the overall defense system closely integrated sea, air, shore, and island.3. PRC Navy's main strategic focus on South China Sea, East Sea and Yellow Sea, which is three major advantages. In cross-strait relations, to construction of the first island chain west of the Inland sea strategy become top priority, and Taiwan will become the key to success of crucial point.