Marine disaster risk prevention and control early warning system

The invention mainly relates to a marine disaster risk prevention and control early-warning system, and the system comprises a key defensive area delimiting unit which is used for delimiting a key defensive area in a to-be-prevented and controlled early-warning area according to the weight of a disaster-bearing body; the risk assessment unit is used for carrying out marine disaster risk investigation and assessment on the key defensive area; the risk monitoring unit is used for carrying out marine disaster risk monitoring in a sea area nearby the nuclear power plant area; and the early warning unit is used for forecasting and early warning marine disaster risks possibly occurring in the construction period and the operation period based on the risk assessment result and the risk monitoring result. Based on identification of marine natural disaster risks and potential environmental disaster risks of nuclear power plant engineering, a disaster risk prevention and control and safety guarantee service scheme is f