Abamectin-loaded microspheres were prepared by the inverse emulsion polymerization of an emulsified ligin-phenolic aqueous solution.The obtained microspheres were characterized by infrared spectroscopy,scanning electron microscope,and specific surface area analyzer.The main work focused on the influence of lignin content on the surface texture and release properties of microspheres.The results show that the obtained microspheres have rough surface and a narrow particle size distribution with a diameter of 50 μm~100 μm.The lignin content significantly influences the structure and release properties.The higher lignin content leads to a looser surface structure and a faster release rate.When the feeding lignin content reaches about 50%,the abamectin-loaded microspheres have a relatively denser surface and a slow-release rate.The released drugs are nearly up to 40% after vibrating in 80% ethanol solution for 20 hours.