Abstract: Fungal disease is one of the main plant diseases.The abuse of traditional chemical pesticides and its impact on the environment do not meet the requirements of green agriculture development.This article focused on the structural characterization of the commonly used active extracts of plant-derived pesticides such as alkaloids,flavonoids,and terpenoids,the common solvent extraction methods,ultrasonic-microwave assisted extraction methods and other extraction methods as well as the active ingredients on the mycelium of pathogenic bacteria.The growth inhibition,changing its membrane permeability and other antibacterial mechanisms,and proposed problems in application,such as the biological function and ecological chemical function of different types of compounds had not been fully studied;and how to reduce the extraction cost of a single compound;and how to make it effective.The structure of the compound was optimized,and the future research direction was finally prospected.