Based on the relationship between bacteria and algae,the marine algicidal bacteria as a potential microorganisms to effectively eliminate the impact of harmful algae blooms,has become the research hot topic.But most researches are  mainly involves in the algicidal bacteria isolation,identification and the algicidal substances purification.However,the mechanisms of bacteria lysing algae are rarely reported.Here,the latest development of algicidal mechanisms is briefly reviewed,and the future development prospects and trends are also discussed.