Abstract: Shellfish poisoning is harmful to aquatic cultivation but also threaten human being’s health greatly.Recently, the more frequent the harmful algae blooms break the more serious the shellfish poisoning threat is .Many countries environmental protection departments and hygiene departmients have paid a good deal of attention to shellfish poisoning endangerment .The paper classified and summarized the research of shellfish poisoning and approached the mechanism of shellfish poisoning, so as find out a basic way to solve the shellfish poisoning problems.

Key words: Shellfish poisoning The generation