Offshore eutrophication evaluation system

The invention discloses an offshore eutrophication evaluation system, and the system comprises a collection module which is used for collecting offshore water body data, and transmitting the offshore water body data to a preprocessing module and a storage module; a storage module used for storing the offshore water body data acquired by the acquisition module; a preprocessing module used for preprocessing the offshore water body data; a processing module used for processing the preprocessed offshore water body data to obtain a threshold value; and an early warning module used for giving an alarm when the detection value exceeds the threshold value. The concentration of chlorophyll a is measured and subjected to multi-parameter evaluation by adopting a fluorescence method, the accuracy of evaluating whether the water body is in an eutrophication state is improved, the processing module can calculate a threshold value of whether any near-seawater water body is in the eutrophication state or not through training