Abstract: The heavy ion research facility at Lanzhou cooler storage ring (HIRFL-CSR) includes several parts of extraction and injection systems. Among these parts the extraction part of CSRm and the injection part of CSRe are the most important parts and the time control precision of them affects the beam’s injection and extraction efficiency directly. In this paper the advanced ARM+FPGA technology was applied to make a precise control of the Kicker control power supply system and the control accuracy reached to ns. ARM was mainly used to upload and download the control data and the timing sequence control was mainly completed by the program on FPGA. All the control signal of remote timing was transferred through optic fiber, and at the same time, the digital potentiometer was used to fix the voltage of the power supply system with the given accuracy of 0.1%.