The RF cavity is a key component for the RF system in CYCIAE-100, the low power consumption and the high stability must be considered in the design to meet the physical needs. It is required that the voltage at the central region is 60 kV The RF cavity is a key component for the RF system in CYCIAE-100, the low power consumption and the high stability must be considered in the design to meet the physical needs. It is required that the voltage at the central region is 60 kV