The present invention relates to a knife holder, wherein a UV lamp is automatically operated to disinfect a cooking knife by only putting the cooking knife in a knife holding part, and thus a user can conveniently the knife holder without separate manipulation for operating the UV lamp. To this end, the knife holder of the present invention comprises: a body part having an opened upper end and a hollow hole formed therein a knife holding part for accommodating a cooking knife, wherein the knife holding part has a plurality of first electrode poles and second electrode poles, which are alternately spaced apart from each other to form a bundle shape, and inserted along the hollow hole a first electrode plate provided at a lower portion of the hollow hole so as to connect lower ends of the plurality of first electrode poles, and having first penetration holes through which the plurality of second electrode poles spaced apart from each other pass a second electrode plate provided at a lower portion of the hollow hole so as to connect lower ends of the plurality of second electrode poles a spacer provided between the first electrode plate and the second electrode plate to electrically block the first electrode plate and the second electrode plate from each other, and having second penetration holes through which the plurality of second electrode poles pass a UV lamp provided on one inside surface inside the body part so as to irradiate UV toward the cooking knife accommodated in the key holding part an operation lamp provided on an outside surface of the body part to display whether or not the UV lamp is operated and a controller for controlling the UV lamp to be operated for a predetermined time and display the operation state of the operation lamp when the first electrode poles are electrically connected to the second electrode poles since the cooking knife is accommodated in the knife holding part.COPYRIGHT KIPO 2015본 발명은 칼꽂이부에 조리용칼을 꽂는 동작만으로 UV램프를 자동적으로 작동시켜 조리용칼을 소독
