The invention provides a silicone rubber insulation cover inserting and pulling buckle locking device. The locking device comprises an insulation outer rod, an insulation clamp which is hinged to oneend of the insulation outer rod, an insulation handle arranged at the other end of the insulation outer rod, and a transmission device connected with the insulation clamp and the insulation handle; the insulation clamp comprises a first clamp body and a second clamp body which are hinged in a crossed manner; the transmission device comprises a pull rod arranged in the insulation outer rod; and oneend of the pull rod is hinged to a first hinge rod and a second hinge rod, and the other end of the pull rod is fixedly connected with the insulation handle. The silicone rubber insulation cover inserting and pulling buckle locking device has the beneficial effects that the insulation clamp, the insulation handle and the insulation outer rod are adopted; hands are not required to be directly contacted with an overhead line in a buckle locking process; a silicone rubber insulation cover inserting and pulling buckle arranged on equipment can be timely and safely closed and locked under the condition that the overhead line is charged, so that the safety of operators is guaranteed, and the reliability of urban and rural power supply networks is improved.