Estuary salt tide early warning grading method

The invention relates to the field of estuary salt tide upstream, in particular to an estuary salt tide early warning grading method. The method comprises the following steps: acquiring historical salty condition data; performing standardization processing on the historical salty condition data to generate standard historical salty condition data; performing historical salt tide event identification according to the standard historical salt condition data, and generating salt tide mode data; key early warning parameters are selected according to the salt tide mode data, and the key early warning parameters are obtained; performing comprehensive evaluation processing and influence degree matching on the key early warning parameters to generate salt tide influence degree value data; constructing a salt tide risk prediction model based on the salt tide influence degree value data; and transmitting the obtained real-time estuary monitoring data to a salt tide risk prediction model for salt tide risk index predict