The present invention relates to a dog leash hook and, more specifically, to a dog leash hook capable of selective separation and stable binding. According to an embodiment of the present invention, the dog leash hook comprises a first ring part, a second ring part and a rotation part. The first ring part comprises: a first ring body having one side formed in a curved hook shape and a first open space at a side thereof； a first opening and closing part having one side connected to the other side of the first ring body by a first hinge to selectively open and close the first open space by rotation； a first screw thread formed on an outer periphery of the other side of the first opening and closing part； and a first nut having one side coupled to the first screw thread corresponding to the first screw thread and rotating on the first screw thread, thereby being able to fix the other side of the first opening and closing part to the end of the hook of the first ring body. The second ring part comprises: a second ring body having one side formed in a curved hook shape and a second open space at a side thereof； a second opening and closing part having one side connected to the other side of the second ring body by a second hinge to selectively open and close the second open space by rotation； a second screw thread formed on an outer periphery of the other side of the second opening and closing part； and a second nut having one side coupled to the second screw thread corresponding to the second screw thread, and rotating on the second screw thread, thereby being able to fix the other side of the second opening and closing part to the end of the hook of the second ring body. The rotation part can connect the other side of the first ring part and the other side of the second ring body to rotate each other.COPYRIGHT KIPO 2020본 발명은 개줄 연결용 고리에 관한 것으로서, 더욱 상세하게는 선택적 분리가 가능하고 결속이 안정적인 개줄 연결용 고리에 관한 것이다.본 발명의 실시예에 따른 개줄 연결용 고리는, 일측이 휘어진 갈고리 형상으로 형성되어 측면에 제1개방공간이 구비되는 제1고리본체；와 일
