Marine ecosystem service value evaluation method

The invention belongs to the technical field of value evaluation, and discloses a marine ecosystem service value evaluation method. Comprising the following steps: collecting marine ecological data, fishery operation data and fish catch; the marine ecological data comprises sea temperature, salinity and chlorophyll concentration; the fishery operation data comprises the number of fishing boats, fishing boat power and operation time; training a machine learning model for predicting the fish catch in real time based on the marine ecological data, the fishery operation data and the fish catch; collecting a marine diversity evaluation value and a marine pollution evaluation value; calculating a first-level ecological evaluation value based on the fish catch predicted by the machine learning model, the marine diversity evaluation value and the marine pollution evaluation value; collecting the climate assessment degree and the climate switching assessment degree, and adding the climate assessment degree and the cli