Offshore oil pollution and toxicity question and answer method and system based on large language model

The invention belongs to the technical field of consultation questioning and answering, and discloses an offshore oil pollution and toxicity questioning and answering method and system based on a large language model. The method comprises the following steps: constructing an offshore oil pollution and toxicity mapping knowledge domain; constructing an offshore oil pollution and toxicity risk prediction model; constructing an offshore oil pollution and toxicity question and answer model; real-time offshore oil pollution and toxicity consultation problem data are collected, and problem rewriting is carried out; consulting and answering by using the offshore oil pollution and toxicity question and answer model; and performing risk prediction by using the offshore oil pollution and toxicity risk prediction model. The system comprises a knowledge graph construction unit, a risk prediction model construction unit, a question and answer model construction unit, a question rewriting unit, a consulting and answering u