PURPOSE: A bird repelling device is provided to widen the vertical detection range and to detect surroundings with a 360-degree view by means of two sensors. CONSTITUTION: A bird repelling device includes: a support shaft(110) which is installed at the center of area where birds are repelled; two bird detecting sensors(120); a sensor module(130) in which the two bird detecting sensors are installed on both sides in a bilateral symmetry, respectively; a detecting part(100) which is installed at the upper portion of the support shaft and includes a driving means which makes the sensor module vertically shuttle by determined distance and turn forward and backward by angle of 180-degree; a bird repelling part which operates at least one spelling means among a lamp, speaker, and an air gun if a signal, that a bird is detected, is input from the bird detecting part; and a control part which operates a bird repelling part based on a signal which is output from the bird detecting part.본 발명은 조류 퇴치기에 관한 것으로, 두 개의 센서모듈을 이용하여 센서모듈이 상/하 일정거리를 왕복하면서 180°씩 정/역회전되도록 함으로서, 상/하 검출범위를 넓게 하면서 두개의 센서만으로 주변 360°를 검출할 수 있도록 하여, 전체적으로 검출효율을 향상시키면서, 센서모듈의 설치 및 유지 보수가 용이하도록 하는 조류 퇴치기를 제공하는 것이다.