Abstract: The China Spallation Neutron Source(CSNS) has experienced a growing demand for increased beam power, necessitating the replacement of their previous Panning H-ion source with an external antenna RF driven H-ion source. This paper outlines the design and implementation of the control system for this new ion source based on EPICS and PLC. To ensure a stable and reliable operation, solutions were developed to optimize to optimize electromagnetic interference and prevent equipment damage caused by high voltage platform ignition. Additionally, operational assistance programs were designed to improve the long-term stability of the ion source. The control system has been successfully implemented, it has been stable and reliable, providing strong support for the efficient operation of the ion source.