2017 is an important year for the 13th Five-Year Plan. China’s marine management is guided by the strategic guidance of “Marine potestatem”，“Blue Economy” and “Maritime Silk Road”. This paper expounds the connotation，development and institutional basis of “marine management”，and based on the development of marine management in China，it sorts out the new regulations and theoretical explorations of marine ecological construction，marine functional area planning and marine law enforcement in 2017. It presents the following characteristics：marine ecology is the core of marine management；the marine management system is still under construction，mainly focusing on the implementation of marine legislative supplements and marine administrative supervision. At the same time，marine management is also faced with challenges such as the urgency of marine ecology，the changing international environment of the ocean，and the overlapping of functions of the marine management system. In the future，China’s ocean management will present a balanced development of the blue economy and ecological environment，the coordinated development of land and sea management and the comprehensive development of sea power capabilities. In order to cope with these challenges and trends，while promoting the integration and optimization of marine legislative work，marine management system construction，and marine law enforcement forces，China should also pay attention to the indicators of citizens’ marine awareness，marine talents，and marine public services.