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PURPOSE : A fence for protecting wild animals and a protection method thereof are provided to prevent a loss of lives and to save energy. CONSTITUTION : A fence for protecting wild animals prevents wild animals from breaking into a farmland. The fence (2) is formed along pillars around a farmland. A high voltage conductive line (4) and an invasion detection line (6) are installed along the pillars. The fence includes a sound output unit (21) for outputting tiger sounds, a high voltage generator for applying high voltage to the high voltage conductive line, and a detection unit which is installed in a farmland. [Reference numerals] (10) Memory unit; (12) Operation detection unit; (14) Day and night detection unit; (16) Mode switch; (18) Timer; (22) Convertor; (22) High pressure generating unit; (24) Sound amplifier; (4) High pressure cylinder wire; (8) Control unit; (AA, 6) Transfer wire