竞争是市场经济体制的一个重要机制。港口或港口企业通过竞争 ,实行优胜劣汰 ,以提高管理技术水平、提高服务质量、促进设备更新等。但是 ,由于港口或港口企业有其自身的行业特殊性 (港口经营具有社会性 ,码头建设具有投资大、回收期长的特点 ) ,这就决定了港口或港口企业不能 Competition is an important mechanism of market economy system. Port or port enterprises through competition, the implementation of the survival of the fittest to improve management skills, improve service quality, and promote equipment updates. However, since port or port enterprises have their own special industries (the operation of ports is social and the construction of wharfs has the characteristics of large investment and long payback period), it determines that port or port enterprises can not