The present invention relates to a technique for effectively exterminating animals and birds, by usually generating and charging a high voltage during a short period of time when animals or birds do not approach, and generating a voltage for extermination for a long period of time, when animals or birds approach. An electric fence for exterminating animals and birds comprises: an oscillation control unit for controlling an oscillation duty； a charge amount control unit for controlling a charge amount； a high voltage charging unit for controlling the high voltage to be outputted for a long period of time； a basic load detecting unit for controlling time for outputting the high voltage； and a high voltage outputting unit for outputting the high voltage during the extended time for outputting the high voltage.본 발명은 동물 또는 조류의 접근이 없는 평상시에는 짧은 시간동안 고압을 발생하여 충전시키고, 동물 또는 조류 접근시에는 퇴치용 전압을 장시간 발생하여 보다 효과적으로 동물 또는 조류를 퇴치할 수 있도록 한 기술이다.
