The invention provides a Chinese herbal medicine biological prevention and control method for Chinese chive maggots, and belongs to the technical field of biological prevention and control of insect attack. The Chinese herbal medicine biological prevention and control method for Chinese chive maggots is characterized in that biological prevention and control of the Chinese chive maggots is implemented by Chinese herbal medicines, the Chinese herbal medicines mainly comprise 19 Chinese medicines including Folium Ginkgo, Pericarpium Granati, Pericarpium Zanthoxyli, Herba Chenopodii, Cortex Acanthopancis, Semen Arecae, Flos Chrysanthemi Indici, Folium Artemisiae Argyi, Folium Ricini, Radix Strophanthi Divaricati, Gelsemium elegans Benth., leaf of Folium seu Cortex Nerii, Flos Caryophylli, Cortex Meliae, Fructus Quisqualis, Radix Sophorae Flavescentis, Artemisia annua L., Polygonum hydropiper L., Herba Houttuyniae and the like, water extracts of the 19 Chinese medicines and chitosan form chelate, the chelate and the pulverized Chinese medicine residues are applied to a Chinese chives field together, so that the Chinese chive maggots can be prevented and controlled effectively, the chelate and the pulverized Chinese medicine residues are toxic-free and do not have pesticide residues, people can eat assured and safe Chinese chives, and economic benefit, social benefit and ecological benefit are remarkable.