The invention provides a novel thermal-insulated pipeline material and a preparation method thereof. The material is prepared in the following steps: (1), nano silica, a silane coupling agent KH-560, phenyltriethoxysilane, isopropanol and water are mixed, stirred by a magnetic stirrer for 40-60 minutes and then subjected to ultrasonic dispersion for 20--30 minutes; (2), the mixture is put into a drying oven to be dried after being filtered; (3), the dried nano silica is mixed with polybutene, bisphenol-A-epoxy resin, magnolol, polyethylene wax, dibutyltin maleate, dioctylin oxide, lauryl sodium sulfate, sodium dioctyl sulfosuccinate,propylene glycol alginate, tristearin, kojic acid dipalmitate and polypropylene fibers, and then the mixture is dispersed in a high-speed dispersion machine; (4), the mixture is added to a double-screw extruder to be extruded and formed. The novel thermal-insulated pipeline material has extremely low thermal conductivity and good thermal-insulation performance and can be used at the higher temperature, and the material reaches a non-combustion A level.