In this paper，a high-power Meter band solid broad band High power amplifier with good performance is presented. The problems of theory and practice in design are discussed. In the frequency range of 80 MHz-210MHz，the amplifier gain is more than 50dB. The power output of continuous wave is 100 Watt. The power fluctuation is less than 1 dB. The amplifier can be used as power emission unit in communication，navigation，radar and ECM equipments.