【Abstract】 This paper presents the effects of harmful algae on fish based on the studies in recent years. The results show that the harmful algae can affect the survival, enzyme, cell, tissue and behavior of fish directly or indirectly, also the phycotoxin can be accumulated in the tissue and organ of fish, and influence the organisms of higher level. At last, we have discussed the elements that affect the toxicity of harmful algae.更多还原