The invention provides a termite-resistant adhesive used for a polyethylene pipeline, an adhesive tape and a preparation of the adhesive tape. The termite-resistant adhesive comprises the following components by mass percent: 5-10% of thermoplastic elastomer, 15-25% of amorphous state alpha-olefin copolymer, 15-25% of middle-molecular polyisobutene, 10-15% of tackifying resin, 30-45% of inorganic enhanced powder, 1-2% of an antioxygen, 1-2% of black color master batch and 1-2% of a termite-resistant agent. The adhesive tape containing the termite-resistant adhesive is excellent in termite-resistant effect, slow in pesticide effect release, not easy to degrade, small in impact on environment, durable in pesticide effect and environmentally friendly, also has good adhesive sealing properties, can realize long-acting sealing protection performance in the process of protecting the pipeline to prevent insects, can achieve good termite-resistant effect so long as the adhesive tape is wound and coated on the surface of a protected object when being used and can be widely applied to termite resistance of a PE gas pipeline and various electric wires.