The invention discloses a linear insulator replacement tool.The linear insulator replacement tool comprises a fixing base, a ratchet wheel wire grip and an insulating rod.One end of the insulating rod is hinged to the fixing base.A ratchet wheel of the ratchet wheel wire grip is connected to the fixing base through a center shaft of the ratchet wheel wire grip.An insulating rope is wound around the center shaft.Pulleys used for guiding the insulating rope are connected to the insulating rod.The fixing base is mounted on a cross arm.Position adjustment of the insulating rope is realized through position adjustment of the insulating rod.The end of the insulating rope hooks a guide line through a guide line hook.The ratchet wheel wire grip tightens the insulating rope to transfer load to further loosen a linear insulator.The linear insulator replacement tool has the advantages that the insulating rod is operated during replacement to achieve hot-line work, so that maintenance of distribution networks of rural areas is facilitated, fault handling of the distribution networks of the rural areas under the electrified conditions is achieved, electricity demand of rural residents is met, and service quality is improved.