The present invention provides a device for detecting foreign substances capable of preventing erroneous cutting of annealed wires without the installment of exclusive sensors and circuits. The present invention relates to an electric scissor (10) having cutting portions (18, 19) moving in association of the rotation of a motor (12) and, more specifically, relates to a device for detecting foreign substances in the electric scissor (10). The present invention includes a means detecting foreign substances stuck to the cutting portions (18, 19), wherein the foreign substances by the foreign substance detection means are detected based on torque information of the motor (12).[課題] 提供一種電動剪之異物檢測機構，該電動剪之異物檢測機構係即使不設置專用之感測器或電路，亦可防止鐵絲之誤切斷。[解決手段] 係包括與馬達12之轉動連動之刃部18、19的電動剪10，檢測出夾入異物之電動剪10的異物檢測機構，其包括偵測刃部18、19夾入異物之異物偵測手段；藉該異物偵測手段之異物的偵測係根據該馬達12之扭力資訊所執行。
