The paper reviews the current status of research on pesticidal alkaloids,including insecticides,rodenticides,fungicides,and bactericides.Nicotine and matrine have already been commercialized in China.Alkaloids such as veratridine,berberine,the alkaloids from Tripterygium wilfordii,and steroidal alkaloids have excellent insecticide activity.Strychnine is used to kill rodents and pyrrolizidine alkaloids have significant activity against microbes.