Aim\ In order to make a pulsed high voltage power which is suitable for cold cathode X tube. Methods\ According to the basic principle of spiral strip line generator for obtaining nanosecond pulsed high voltage

the block diagram of design method is given. The output of pulsed high voltage of a set of device we have made had been measured by the voltage divider. Results and Conclusion\ The experimental results indicate that the output pulsed high voltage of the generator can meet the demand of the cold cathode X tube.