Presenter: Dr. Yuliang Zhang (IHEP/CSNS) Title: Modernization of Accelerator Control System towards CSNS-II The China Spallation Neutron Source (CSNS) accelerator is the first high intensity proton accelerator in China, with a designed beam power of 100 kW and currently operating at 170 kW. The CSNS-II project aims to upgrade the accelerator's beam power to 500 kW. The presentation will briefly introduce the CSNS accelerator and its operational status, followed by an overview of the CSNS accelerator control system. Finally, it will focus on the challenges faced by the control system modernization during the upgrade to meet the requirements of the CSNS-II accelerator, as well as the chosen technical pathway and the selection of software and hardware.