The invention discloses an outsole rubber for insulating boots with a rubber surface that can prevent scorch, which is characterized in that, calculated in parts by weight, it comprises: natural rubber 100, sulfur 0.7-0.9, accelerator M 0.4-0.6, accelerator DM 1.0‑1.2, accelerator TMTD 0.7‑0.9, zinc oxide 4‑6, stearic acid 1.4‑1.6, antioxidant D 1.4‑1.6, calcium carbonate 60, clay 60, pine tar 9‑10, montan wax 0.8‑1.2 , Vaseline 1‑3, paraffin 0.8‑1.2, zinc stearate 0.9‑1.1, oil soluble black 3.8‑4.0, salicylic acid 0.2‑0.4, anti-scorch agent PVI 0.1‑0.5. The outsole glue for insulating boots produced with this formula has good insulation performance and low cost, can adapt to the operating environment of electricians, and is suitable for protection in electrical work; The compound has a recovery effect, which can further improve the processing safety of the compound.