Abstract: In the field of industrial exhaust gas treatment, traditional dust removal equipment has significant limitations in capturing submicron particles (PM_1.0 and below), and the escape of ultrafine particles has become a key technical challenge in achieving emission standards. Electrostatic agglomeration technology is an important development direction of electrostatic precipitation technology by introducing electric field regulation mechanism to break through the traditional limitation of ultrafine particle capture based on Brownian diffusion mechanism. This paper reviews the state-of-the-art of electrostatic agglomeration technology both domestically and internationally, focusing on two configurations: traditional three-zone and improved two-zone systems. The results show that the agglomeration of bipolar charges in two-zone high-frequency alternating current (AC) electric field has great potential. However, with the increasingly stringent emission standards and the acceleration of industrial digital transformation, how to fully release the potential of electrostatic agglomeration technology is a key issue that needs to be solved urgently. Future efforts should focus on developing deep coupling of various agglomeration technologies, exploring green and low-energy-consumption power supply pathways, and integrating intelligent algorithms to achieve full-condition parameter optimization and real-time online monitoring. These advancements will facilitate the attainment of efficient capture targets approaching zero emissions, thereby providing strong support for China's ecological environment protection and sustainable development.