The invention relates to the technical field of manufacturing of antistatic thermal-insulation pipes, particularly an antistatic thermal-insulation pipe and a preparation method thereof. According to the mix design of PVC (polyvinyl chloride), an ABS (acrylonitrile-butadiene-styrene) resin, paraffin/carbon black, an acrylate copolymer, magnesium stearate, phosphogypsum powder, trifunctional polyether, hexafunctional polyether, silicone oil and a polyamide resin, the prepared pipe has excellent thermal-insulation effect and antistatic effect, and the properties of the pipe are effectively enhanced, so that the pipe has wide application range. In combination with the raw material selection, the manufacturing cost is lower.