The utility model relates to an electrical equipment maintenance protective product, in particular, an insulation protective tube for electrical binding posts. When electrical equipment maintenance is carried out, insulation processing is required to be performed on binding posts of electric connection sheet, while, defects of complicated operation and unstable protection defect exist on existing protection measures. The body of the insulation protective tube of the utility model is composed of three insulation layers, namely, an easily-punctured surface layer, a puncture-resistant layer and an elastic positioning inner layer which are distributed from outside to inside sequentially; the section of the easily-punctured surface layer is of a circular structure; side walls of the puncture-resistant layer and the elastic positioning inner layer are provided with test openings; the cross sections of the puncture-resistant layer and the elastic positioning inner layer are respectively C-shaped; and two sides of the test opening of the inner wall of the elastic positioning inner layer are respectively provided with an elastic retreat-preventing tape which passes through the entire protective tube. The insulation protective tube for electrical binding posts of the utility model has the advantages of simple structure, portable convenience and convenience in storage. The protective tube can sleeve binding posts of different models through utilizing elastic deformation of the inner layer. When maintenance is carried out on equipment, the equipment can be measured without removing the insulation protective body required, which enables high safety and reliability.