Launching rocket over sea has great advantages in improving the rocket carrying capacity and reducing the risk of debris falling.China has successfully implemented sea launch missions of multiple types of solid rocket.Compared with solid rocket，liquid-oxygen kerosene rocket has higher specific impulse and environmental friendliness.According to the characteristics and laws of the land-based launch of liquid-oxygen kerosene rocket，the process and implementation plan of solid rocket launch missions over sea and the basic operation plans of port base，sea launch ship，carrier rocket，support ship，and other parts of the sea launch system are studied，and the implementation process of sea launch missions is proposed.The importance of diversionary release，the zero-second off and automatic docking of connector，and the unattended propellant filling technologies in sea launch rockets and the key problems to be solved are analyzed.