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The application provides a supporting structure for landslide emergency treatment and a use method, and belongs to the technical field of landslide emergency treatment. The supporting structure comprises an anchor rod, a connecting mechanism is arranged on the anchor rod, the connecting mechanism comprises hollowed-out discs one, two and three which are fixedly sleeved on the anchor rod, the diameters of the hollowed-out discs one, two and three are sequentially reduced, a plurality of connecting rings are fixedly sleeved on the anchor rod, and grooves are arranged on the anchor rod corresponding to the connecting rings. The hollowed-out discs one, two and three and the connecting rings are fixedly sleeved on the anchor rod, the contact area of the anchor rod and the grouting body is increased through the hollowed-out discs one, two and three and the connecting rings, the connecting strength of the anchor rod and the grouting body is improved, the pull-out resistance of the anchor rod is increased, and therefore the support of the side slope is more stable and reliable.